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third generation
相关语句
  第三代
     Study on the Third Generation Image Intensifier
     第三代像增强器研究
短句来源
     “The Z-80-The third Generation Microcomputer family
     第三代微计算机系列Z-80
短句来源
     Calibration for the Third Generation Satellite Laser Ranging System
     第三代卫星激光测距系统的校准方案
短句来源
     A Fast Test System for Frequency Characteristic——Studies on the Third Generation of ATS
     快速频率特性测试系统——第三代自动测试系统的研究
短句来源
     Analysis of Ring Artifacts in Third Generation X-ray CT
     第三代X线CT环形伪影分析
短句来源
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  三代
     Effect of ion feedback blocking Al_2O_3 film on the performance of third generation night-vision imaging device
     防离子反馈Al_2O_3膜对三代夜视成像器件性能的影响
短句来源
     IMT-2000: the Third Generation of Mobile Communication System
     第三代移动通信系统IMT-2000
短句来源
     Discussion on the Development Trend of VoIP Technology——H.325:The Third Generation Multimedia System
     漫谈VoIP技术发展趋势——H.325:第三代多媒体系统
短句来源
     In non-surgical cases,the using rates of three kinds of antiolics were on front : the third generation cefhalosporins(20.7%),macrolides (7.4%),quinolones(7.3%).
     非手术病例使用前三位用药为三代头孢(20.7%)、大环内酯类(7.4%)、喹诺酮类(7.3%)。
短句来源
     the rates of quinolones and the third generation cephalosporins all were 38.8%.
     三代头孢及喹诺酮类抗菌药总使用率均为38.8%。
短句来源
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  三世代
     Body weight, daily gain, feed efficiency index and carcass lean percent of the third generation fattening pigs in 196.3 days was 90kg, 569g, 3.44, 53.5% respectively. The main pork quality indexes were normal.
     三世代肥育猪196.3日龄体重90kg,日增重569g,耗料指数3.44,胴体瘦肉率53.5%,主要肉质指标正常;
短句来源
     the Pyroelectricity of pyrite from different generations is different,the first generations is P,the second and third generation is the mixture of P and N;
     不同世代黄铁矿热电性不同 ,第一世代为P型 ,第二、三世代为P、N混合型 ;
短句来源
     636,14.The diversity between the green-shell-egg hens and non-green-shell-egg hens which test cross the first and the third generation 613, 463;
     636,14经卡方检验差异不显著。 对一世代、三世代进行测交,其后代产青壳蛋与非青壳蛋母鸡个数分剐为613,463;
短句来源
     706,236 and the theoretic data accounted the dominant and recessive gene frequency of the first and the third generation 600,467;
     706,236; 与通过一世代、三世代的显性基因频率与隐性基因频率计算出的理论数据600,467;
短句来源
     The physiological and biochemical indexes of the first and the third generational young Xiang pigs at agricultural and biologic college in Shanghai Jiao Tong University were measured. The results showed that the rectal temperatures, respiratory rates and heart rates of the young Xiang pigs were similar among the first generation, the third generation and generations raised in original area, and between boar piglings and gilts (P > 0.05).
     对上海交通大学农业与生物学院选育的一世代和三世代香猪幼猪的生理和生化指标进行了测定和分析.两个世代香猪幼猪的体温、呼吸次数和心率相似, 也接近原产地同龄香猪,且公、母猪之间差异不显著(P>0.05);
  “third generation”译为未确定词的双语例句
     From the first to the third generation ΣREE are 0.722,1.444,1.887μ g/g in the root,0.354,0.318,0.267μ g/g in the branch and 0.492,1.312,0.715μ g/g in the needle respectively.
     从第1代林到第3代林,木麻黄根ΣREE分别为0.722、1.444、1.887μg/g,枝分别为0.354、0.318、0.267μg/g,叶分别为0.492、1.312、0.715μg/g。
短句来源
     Results The isolation rate of P. aeruginosa from 1997 to 2003 was 24.51%, 23.94%, 21.01%, 40.06%, 36.17%, 46.76% and 55.72%, respectively. The antibiotic effect of the third generation of Cephalosporins against the said bacteria showed a tendency to decline.
     结果 1997—2003年各年间,铜绿假单胞菌的分离率分别为24. 51%、23. 94%、21. 01%、40. 06%、36. 17%、46. 76%、55 72%。
短句来源
     Methods: The third generation of OB was totally cultivated into 10% of fetal bovine serum(FBS) then serum-free medium was given so that cells were synchronized in the G0 stage and divided into three groups: G36G had a density of 10-11mol/L in the G36G group;
     方法:3代OB在含10%胎牛血清(FBS)的完全培养基中培养后,更换无血清培养基使细胞同步化在G0期,分为3组:G36G组,培养液中G36G浓度为10-11mol/L;
短句来源
     Methods: The third generation BMSCs were interfered with LaCl3 in concentration of 5.564×102, 5.564 and 5.564×10-2 μg/mL concentration respectively. The same generation cells interfered with 50 ng/mL BMP-2 or nothing were taken as positive or blank control groups.
     方法:用5.564×102、5.564、5.564×10-2μg/mL3种浓度的La3+干预第3代BMSCs,设空白对照组和50ng/mLBMP-2干预的阳性对照组。
短句来源
     The average ratioes of female to male for the first,second, and third generation were 1∶2.85, 1∶1.45,and 1∶3.28, respectively.
     第1,2,3代雌雄性比平均值分别为1∶2.85,1∶1.45和1∶3.28。
短句来源
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  third generation
The overall yield for the third generation dendrimer 5 from Schlüter dendron is 12%.
      
When transferred onto plum and peach, the spider mite adapted to the new hosts in the second generation; however, on cherry and apricot, it adapted in the third generation.
      
In a series of generations, the fertility as well as dimensions of newborn water fleas decreased starting from the third generation.
      
Models with nonuniversal soft breaking in the third generation and Higgs sector can allow for new effects arising from additional early Universe annihilation through the Z-channel pole.
      
In the third generation CDMA mobile communication system, auxiliary pilot channel is used in the uplink channels.
      
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(1) Euonymus geometer, Abraxas miranda (Butler), is one of the principal garden pests inShanghai, infesting, in particular, Euonymus japonicus Thumb and E. Fortunei Hand-Mazz.,Celastraceae. In China, its distribution includes the provinces of Kiangsu, Chekiang and Kwei-chow as well as some northeastern provinces. (2) Investigations in Shanghai reveal that three generation of euonymus geometer occur inthe course of a year, with the pupa surviving the winter underground. Adults of the first genera-tion start emerging...

(1) Euonymus geometer, Abraxas miranda (Butler), is one of the principal garden pests inShanghai, infesting, in particular, Euonymus japonicus Thumb and E. Fortunei Hand-Mazz.,Celastraceae. In China, its distribution includes the provinces of Kiangsu, Chekiang and Kwei-chow as well as some northeastern provinces. (2) Investigations in Shanghai reveal that three generation of euonymus geometer occur inthe course of a year, with the pupa surviving the winter underground. Adults of the first genera-tion start emerging in the first half of April and the larvae of third generation go undergroundto enter into pupa stage in the middle of November. During this period the larvae infest theleaves of Euonymus japonicus Thumb and E. Fortunei Hand-Mazz. (3) This report deals with the life cycle and habits of this pest. It also includes data rela-tive to the horizontal and vertical distribution densities of its winter pupa. The horizontal dis-tribution density is highest in places just under the plant-stems, reaching 37.8-53.3%, while inplaces about 1 ft beyond the stems, no pupa is to be found. Its vertical distribution density ishighest in places 2 mm from the ground surface, ranging from 37.5% to 45.1%, while below5 mm no pupa has been found. (4) Chemical control experiments have been carried out in the laboratories. The results ofthese experiments show: (a) 10% DDT powder is fully capable of exterminating larvae of all stages; (b) 5% DDT powder registers 95% mortality when treated against olders larvae; (c) 1/1000 dipterex solution registers 97.5% mortality when treated against the larvae of laterstages; (d) 1/2500 dipterex solution registers 100% mortality when treated against larvae of 2-3stages; 78.4% against larvae of later stages; (e) 1/150, 1/200 and 1/300 solution of lead arsenate effects only low mortality. On the basis of the data on the horizontal and versical distribution densities of the over-wintering pupa as reported here, it is recommended that steps should be taken to unearth andesterminate the winter pupa in combination with the anti-four-pests campaign in the winter. Inview of the poor flying ability of the adult, it is also recommended that survey should be madeto ascertain the growth data of the adults of the first generation and exterminate them whenthey start emerging. The survey should be made on basis of past records and the weather condi-tion of the current year.

一、大叶黄杨尺蠖(Abraxas miranda Butler)是重要的园林害虫之一,为害卫矛科的两种植物,即:大叶黄杨与爬行卫矛。在中国分布于江苏、浙江、贵州及东北等地。 二、大叶黄杨尺蠖在上海一年发生三代,但在室内饲育可完成四代,以蛹在土中越冬。第一代成虫自4月上旬开始羽化,幼虫自4月下旬开始为害,至5月下旬进入蛹期。第二代成虫自6月上旬开始羽化,幼虫自6月中旬开始为害、直至8月下旬进入蛹期。第三代成虫自8月中旬开始羽化、幼虫自9月上旬开始至11月中旬进入蛹期。 三、根据室内饲养,成虫的寿命第一代雄虫平均7.8天,雌虫平均9.6天;第二代雄虫平均11天,雌虫平均15.4天;第三代雄虫平均9天,雌虫平均10天;第四代雄虫平均12天,雌虫平均14.5天。卵期第一代为14.5天,第二代8.6天,第三代9天,第四代12天。幼虫期第一代平均34.9天,第二代平均23.4天,第三代平均25天,第四代平均58天。蛹期第一代平均11.4天,第二代平均45.8天,第三代平均15.9天,第四代为越冬蛹。 四、成虫飞行力很弱,白天栖息在大叶黄杨树下或附近草丛中,晚上活动,趋光性不强。成虫羽化多在下午3—5时,羽化后即可交尾,一...

一、大叶黄杨尺蠖(Abraxas miranda Butler)是重要的园林害虫之一,为害卫矛科的两种植物,即:大叶黄杨与爬行卫矛。在中国分布于江苏、浙江、贵州及东北等地。 二、大叶黄杨尺蠖在上海一年发生三代,但在室内饲育可完成四代,以蛹在土中越冬。第一代成虫自4月上旬开始羽化,幼虫自4月下旬开始为害,至5月下旬进入蛹期。第二代成虫自6月上旬开始羽化,幼虫自6月中旬开始为害、直至8月下旬进入蛹期。第三代成虫自8月中旬开始羽化、幼虫自9月上旬开始至11月中旬进入蛹期。 三、根据室内饲养,成虫的寿命第一代雄虫平均7.8天,雌虫平均9.6天;第二代雄虫平均11天,雌虫平均15.4天;第三代雄虫平均9天,雌虫平均10天;第四代雄虫平均12天,雌虫平均14.5天。卵期第一代为14.5天,第二代8.6天,第三代9天,第四代12天。幼虫期第一代平均34.9天,第二代平均23.4天,第三代平均25天,第四代平均58天。蛹期第一代平均11.4天,第二代平均45.8天,第三代平均15.9天,第四代为越冬蛹。 四、成虫飞行力很弱,白天栖息在大叶黄杨树下或附近草丛中,晚上活动,趋光性不强。成虫羽化多在下午3—5时,羽化后即可交尾,一般交尾时间为6—7小时,最长可达11小时,交尾后7小时即行产卵,每一雌蛾可产卵360余粒。 五、幼虫共五龄,羽化后3、4小时就开始取食,受?

The codling moth is widely distributed throughout Sinkiang Uighur Autonomous Region, andis considered to be the most destructive fruit pest to the apple and the pear. In order to combatthis fruit borer effectively, investigations on the biology and chemical control of this insect pesthave been conducted in this region since 1956. The present paper gives only the resultsobtained in Ili, the major apple growing district in this region, in 1957 and 1958. 1. The moths have two full, and a partial third generations...

The codling moth is widely distributed throughout Sinkiang Uighur Autonomous Region, andis considered to be the most destructive fruit pest to the apple and the pear. In order to combatthis fruit borer effectively, investigations on the biology and chemical control of this insect pesthave been conducted in this region since 1956. The present paper gives only the resultsobtained in Ili, the major apple growing district in this region, in 1957 and 1958. 1. The moths have two full, and a partial third generations a year. However, about 51.5%of the first brood larvae do not pupate but remain in their cocoons until the following spring.The seasonal lifecycle records together with the spraying schedule are presented in this paper. 2. The emergence climaxes of the overwintering and the first generation of the year 1957were in agreement with that of 1958, and were separated by 48 & 54 days for these years respec-tively. The oviposition climaxes of the first and the second generations in the year 1957 and1958 closely resembled each other, and separated by 46 & 49 days. Again, the hatching climaxesof the first and the second broods occurred almost at the same date in the two successive years,with intervals of 45 & 46 days. All these indicated that in completing one full generation, about45--54 days were required. 3. The preoviposition period of the overwintering generation and that of the first generationwere 3.6 & 4.5 days, and 3.4 & 6.1 days for the two years respectively. The maximum numberof the eggs deposited by a single female of different generations in 1957 and 1958 were 84-125-141,while the average number was 32.6-43 eggs. The longevity of the adult of the overwintering andthe first generation averaged 6.8--10.6 days and 7.6-9.1 days respectively. It is found that thelongevity of the adult could be lengthened by a nectar supply. The longevity of the female isalways longer than that of the male. The sex ratio is 1:1. 4. The first appearance of the egg and the total number of eggs deposited on different varietiesare different. Among the 564 eggs of the first generation found in 1957, 21.9% was found on theearly variety, 25.9% on the median variety, and 52.1% on the late variety. By examining thenumber of infested fruits on different varieties. It is also found that the accumulative percentageof the bored fruit differed with different varieties. In 1957, the first brood larvae infesting theearly, median, and the late varieties were 35%, 41.5% and 55% respectively. These facts reveal thatfor forecasting the first appearance of the egg and the number of infested fruits, proper selecting ofdifferent varieties are of importance. 5. The incubation period of the eggs averaged from 8--9 days in general, and from 5--6days in the hot weather. In the year 1957, the overwintering generations began to lay their eggs at the.begining of May, and these eggs hatched in from 10--21 days, with an average of 15 days;whereas in the year 1958, they started to deposit their eggs in late April, and hatched in from 13--24days, with an average of 19.2 days. So, the first brood larvae of both years hatched in late May.It is extremely important to bear this in mind when arranging the schedule of DDT spray. 6. It has been found that the threshold temperature for the development of the codling mothis 9℃ or 10℃, according to different authors and that approximately 230 day-degrees of effectivetemperature are required to bring about the hatching of the earlist larvae of the first generation.According to our observation and calculation, 9℃ is more suitable as a basists to start with 237.3day-degrees were reached on May 25th, 1957, and 232.9 day-degrees were reached on May 22nd,1958, the calculated dates for these two years coincided nicely with what are actually observed inorchards. This indicates that the method of "Thermal Sums" holds fairly well in forecasting thefirst appearance of the first hatching. 7. According to the date the newly hatched larvae bore into, and the mature larvae come outof the infested fruits, the larval period lasted 25.5--30.2

1.苹果蠹蛾普遍分布于新疆维吾尔自治区各地,历年来受害最重的为苹果、沙果及香梨等。伊犁则为自治区内苹果的主要产地,为此特于1957—1958年在该地作了较全面的观察,该虫一年可发生两个完整世代,和部分第三代,以老熟幼虫越冬。第一代幼虫有滞育现象,滞育率为51.5%。 2.两年来越冬世代及第一代成虫羽化的高峰,第一和第二代产卵的高峰,及第一和第二代幼虫蛀果的高峰,基本上都是一致的。两年中2代成虫羽化高峰相距48—54天,2代产卵高峰相距46—49天,2代幼虫蛀果高峰相距45—46天,三者说明完成一代,大致需时45—54天。 3.两年来观察越冬代及第一代成虫产卵前期之平均,分别为3.6—4.5天,及3.4—6.1天。各代最高产卵量是84—125—141粒,平均32.6—43粒。越冬代及第一代成虫寿命之平均,分别为6.8—10.6天。及7.6—9.1天。寿命之增长与其补充营养有关。雌虫寿命均较雄者为长。雌雄性比例为1:1。 4.成虫在不同品种上产卵的情况。表现有所不同。分析1957年在早、中、晚3品种上 所查得的第一代卵(564粒),各占21.9%、259.9%及52.1%。另外检查不同品种之蛀果率,亦发现同样现象...

1.苹果蠹蛾普遍分布于新疆维吾尔自治区各地,历年来受害最重的为苹果、沙果及香梨等。伊犁则为自治区内苹果的主要产地,为此特于1957—1958年在该地作了较全面的观察,该虫一年可发生两个完整世代,和部分第三代,以老熟幼虫越冬。第一代幼虫有滞育现象,滞育率为51.5%。 2.两年来越冬世代及第一代成虫羽化的高峰,第一和第二代产卵的高峰,及第一和第二代幼虫蛀果的高峰,基本上都是一致的。两年中2代成虫羽化高峰相距48—54天,2代产卵高峰相距46—49天,2代幼虫蛀果高峰相距45—46天,三者说明完成一代,大致需时45—54天。 3.两年来观察越冬代及第一代成虫产卵前期之平均,分别为3.6—4.5天,及3.4—6.1天。各代最高产卵量是84—125—141粒,平均32.6—43粒。越冬代及第一代成虫寿命之平均,分别为6.8—10.6天。及7.6—9.1天。寿命之增长与其补充营养有关。雌虫寿命均较雄者为长。雌雄性比例为1:1。 4.成虫在不同品种上产卵的情况。表现有所不同。分析1957年在早、中、晚3品种上 所查得的第一代卵(564粒),各占21.9%、259.9%及52.1%。另外检查不同品种之蛀果率,亦发现同样现象。1957年第一代幼虫对早、中、晚熟3品种(每一品种各200枚)的累进蛀果率分别为35%、41.5%及55%;至第二代时中熟及晚熟更发展至62.5%?

The Delphacodes striatella F., is widely distributed in Soochow, Wusih, Changchowof the Taihu Lake rice region in Kiangsu. It is one of the worst pests of our rice crop.The crops from the double cropping early rice and single cropping middle rice are injuredeven more severely. By our observations, the host plant of this small brown planthopper is changedseasonally. The most common hosts are rice in summer or autumn and wheat, Alope-curus aequalis Sobol. in spring or winter. Supplementary hosts include barley,...

The Delphacodes striatella F., is widely distributed in Soochow, Wusih, Changchowof the Taihu Lake rice region in Kiangsu. It is one of the worst pests of our rice crop.The crops from the double cropping early rice and single cropping middle rice are injuredeven more severely. By our observations, the host plant of this small brown planthopper is changedseasonally. The most common hosts are rice in summer or autumn and wheat, Alope-curus aequalis Sobol. in spring or winter. Supplementary hosts include barley, Leersiajaponica Makino, Zoysia japonica Steud., etc. According to the degree of embryonic development the growth of the egg is dis-tinguished in six stages, such as: Blastoderm, Germ band, Yellow spot, Blastokinesis,Eye spot, Accessory-podite and Hatching. The development of nymph goes through about five instars, it becomes adult afterthe fifth moult. The period of each stage is limited by temperature. At 25--26℃, theegg stage is about eight days, the nymph stage is about sixteen days, the adult is aboutfourteen days, the adult is about seven days. The sexual muturation period of the Brachypterous type is 1--2 days earlier than theLongipennate. The female copulates with the male immediately. The eggs are depositedinto the leaf sheath or beside the leaf mid-rib. The egg streak consists of double rowof eggs. Delphacodes striatella F. produces six generations per year. The first generation isfrom late April to early July. The second generation is from early June to early July.The third generation is from early July to August. The fourth generation is from earlyAugust to middle September. The fifth generation is from early September to middleOctober. The nymph of the sixth generation hatches in early October. During the3rd and 4th instars it hibernates on wheat, alfalfa or weeds. The activity of hymenpterous parasites, nematodes and spider in June and July sup-presses the multiplication of the small brown planthopper. The difference of the popula-tion in some regions or in the field is closely related to the nutrition of the host and themicroclimate. The results of laboratory and field tests indicated that: spraying 6% γ wettableB.H.C. (1:200), 46.6& Folidol (1:3000) and 15% wettable Malathion (1:1500) at100 kg of the solutions per mou, gave very successful control.

1.灰稻虱是苏南稻区每年普遍发生为害和暴发年猖獗成灾的主要害虫。由于其早在6—7月间已进入全年发生盛期,故对双季早稻和单季中稻的为害特别严重。 2.该虫的主要寄主 夏秋季为水稻Oryza sativa L.,冬春季为小麦Triticum aestivum L.、看麦娘Alopecurus aequalis Sobol.。其它寄主有稗Echinochloa crus-galli Beauv.、李氏游草Leersia japonicaMakino等十种。 3.灰稻虱在苏南稻区一年发生六代。发生时期:第一代为4月下旬—6月上旬,第二代为6月上旬—7月上旬,第三代为7月上旬—8月上旬,第四代为8月上旬—9月中旬,第五代为9月上旬—10月中旬,第六代若虫在10月上、中旬孵化,11月上、中旬以3—4龄若虫于麦田、紫云英田或沟埂杂草处越冬,翌年3月中旬—4月中旬化为成虫。 4.灰稻虱在水稻田内的消长峰态可以分为“双峰”和“单峰”两种。高峰的出现期一般总是在水稻营养状况良好的分蘖盛期和孕穗期。 5.早夏发生量的多寡,除与水稻早期栽培的面积和营养状况密切有关外,还与冬前虫口基数和1—3月间的气温等综合因子有关。6—7月间,寄生...

1.灰稻虱是苏南稻区每年普遍发生为害和暴发年猖獗成灾的主要害虫。由于其早在6—7月间已进入全年发生盛期,故对双季早稻和单季中稻的为害特别严重。 2.该虫的主要寄主 夏秋季为水稻Oryza sativa L.,冬春季为小麦Triticum aestivum L.、看麦娘Alopecurus aequalis Sobol.。其它寄主有稗Echinochloa crus-galli Beauv.、李氏游草Leersia japonicaMakino等十种。 3.灰稻虱在苏南稻区一年发生六代。发生时期:第一代为4月下旬—6月上旬,第二代为6月上旬—7月上旬,第三代为7月上旬—8月上旬,第四代为8月上旬—9月中旬,第五代为9月上旬—10月中旬,第六代若虫在10月上、中旬孵化,11月上、中旬以3—4龄若虫于麦田、紫云英田或沟埂杂草处越冬,翌年3月中旬—4月中旬化为成虫。 4.灰稻虱在水稻田内的消长峰态可以分为“双峰”和“单峰”两种。高峰的出现期一般总是在水稻营养状况良好的分蘖盛期和孕穗期。 5.早夏发生量的多寡,除与水稻早期栽培的面积和营养状况密切有关外,还与冬前虫口基数和1—3月间的气温等综合因子有关。6—7月间,寄生蜂、线虫和蜘蛛类等天敌的活动,对灰稻虱的增殖也有一定的抑制作用。 6.个体发育中,卵期还可凭胚胎发育的特征划分为胚盘、胚带、黄斑、反转、眼点、附肢形成和孵化等七期。各虫?

 
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