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  net
     Estimation of Chinese Terrestrial Net Primary Production Using LUE Model and MODIS Data
     基于MODIS数据和光能利用率模型的中国陆地初级生产力估算研究
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     The Effect of Dietary Starch Source on Ileum Digestibility, Net Portal Absorption and Pattern of Amino Acids in Growing Pigs
     日粮淀粉来源对生长猪氨基酸消化率、门静脉吸收量和组成模式的影响
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     Study on the Spatial Distribution of Climatic Variables Based on GIS Technology and Calculating Net Primary Productivity in China
     基于GIS的气候要素空间分布研究和中国植被第一性生产力的计算
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     Net power loss of coherent light in laser cavity and the linewidth of laser
     激光腔内的相干光损耗功率和输出频宽
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     On the Net Energy Transport and Movement of Typhoons
     能量输送与台风的移动
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  clean
     The ratio of clean fiber was(57.94±6.79)% and(47.43±11.22)% respectively,and the difference is significant(P<0.01);
     毛率分别为(57.94±6.79)%、(47.43±11.22)%,且差异极显著(P<0.01);
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     4.the fercent yield of clean wool of Xinji and Dongbei are (57.58±6.79)% and (48.65 ± 11.22)%respectively, the difference is significant(P <0.01 ) ;
     4.毛率分别为(57.58±6.79)%、(48.65±11.22)%,且差异极显著(P<0.01);
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     The deworming clean rate and deworming rate were 93.9% and 98.6% in a dose of 0.1mg/kg,resp.
     口服0.1mg/kg剂量组绵羊的羊狂蝇蛆驱率93.9%、驱虫率98.6%。
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     The deworming clean rate and the deworming rate in the yaks of ivermectin group in a dose of 12.5μg/kg were 85.0% and 91.2%,93.3% and 93.2%,respectively,and in a dose of 25μg/kg and 50μg/kg were all 100.0%.
     剂量组驱率分别为85.0%和91.2%,驱虫率分别为93.3%和93.2%; 25、50μg/kg剂量组均为100.0%。
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     Calculation of Soft Water Preparation Amount of 8.5dH°Open-Circuit Clean Circulation Water System
     8.5dH°开路循环水系统的软水制备量计算
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     The Clinical Study of Fu Yan Jing Mixture on Treating Chronic Pelvic Inflammatory Disease and Effect on Collagen Type Ⅲ mRNA Expression
     妇炎合剂治疗慢性盆腔炎的疗效评价及其对Ⅲ型胶原蛋白mRNA表达的影响
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     Study on Safe Ecotype Purificant of Compound Microbe for Water
     生态安全型复合微生物水剂的研究
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     PHARMACOLOGICAL INVESTIGATION OF EPRAZINONE
     咳酮(Eprazinone)的药理研究
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     Synthesis of “Kui Xiao Jing” (Trithiozine)-A New Antiulcer Drug
     新型抗溃疡药溃消(Trithiozine)的合成
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     THE TURN-OVER AND SELF-CLEANING CAPABILITY OF SEAWATER IN DALIAN BAY
     大连湾海水交换及自能力的研究
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  net
In this paper for the two-dimensional diffusion equation, the net region is divided into bands, a special kind of block.
      
Some of them including the existence problem, minimax problem, net representation, bend minimization, area minimization, placement problem, routing problem, etc.
      
A series of Petri net-based definitions were formulated for describing four types of structural errors in a rule-based system (RBS), including inconsistency, incompleteness, redundancy and circularity.
      
A marked ω-Petri net model of acyclic RBS was constructed.
      
The results showed that the diurnal course of net photosynthetic rate displayed a two-peak pattern, that of stomatal conductance displayed a hollow pattern, and that of transpiration rate displayed a signal-peak pattern.
      
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  clean
Therefore, new and effective methods to decrease the risk of heavy metal pollution in crops and to clean the contaminated soils are urgently needed.
      
In this study, H-form oleoyl-carboxymethyl-chitosan (H-O-CMCS) was prepared as a coagulation agent to clean up the residual oil from the waste-water of oil extraction (WWOE).
      
The ultrastructure of liver cells from rook as well as jackdaw (Corvus monedula) and hooded crow (Corvus cornix) (Corvidae family) from a conventionally clean area was studied as control.
      
Paresthesia and cenesthopathy were characteristic of the participants of the Chernobyl clean-up.
      
In clean-up workers, somatosensory disorders were significantly associated with hypochondriac and schizophrenic-like symptoms.
      
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This is the second report of the results obtained on the improvement of Mongolian sheep by crossbreeding on the May First State Farm in Charhar, Inner Mongolia, and Chapei State Farm, in Changpei of Hopei Province (Formerly in Charhar). Mongolian ewes on these two Farms were crossed with rams of two finewool breeds-Soviet Merinoes and Caucasians,-and of a Medium-wool breed-Tsigai. all of which were introduced from the Soviet Union. The fleece of the Mongolian sheep on Chapei Farm is composed of 52.95°/o of true...

This is the second report of the results obtained on the improvement of Mongolian sheep by crossbreeding on the May First State Farm in Charhar, Inner Mongolia, and Chapei State Farm, in Changpei of Hopei Province (Formerly in Charhar). Mongolian ewes on these two Farms were crossed with rams of two finewool breeds-Soviet Merinoes and Caucasians,-and of a Medium-wool breed-Tsigai. all of which were introduced from the Soviet Union. The fleece of the Mongolian sheep on Chapei Farm is composed of 52.95°/o of true wool, 5.86% of hetero-typical fibres and 41.19% of hair (including kemp). When crossed with fine-wool rams, the true wool content rose to 82.32-87.36% in the F_1 generation, to 97.23-97.32% in the F_2 generation. Hair and kemp disappeared entirely on the shoulder sample of F_2, heterotypes decreased to 0.11%, while true wool content rose to 99.89%. The fleece of Mongolian sheep on the May First Farm contains 48.59% of true woo), which rose to 79.48% in the F_1 of Tsigai×Mongolian cross, and 91.17% in the F_1 of Soviet Merino×Mongolian cross. The results indicate that when Mongolian ewes are crossed with rams of finewool breeds, uniformity in fibre type can be attained in two generations. The fleece of F_2 sheep on the Chapei Farm is of 60-64's quality, the bettercared group being slightly coarser. When various groups of lambs and yearlings of F_1 and F_2 on Chapei Farm are compared, it is shown that under unfavourable environmental conditions, animals of the F_2 generation do not grow as fast as those of Ft, their constitution being also weaker than the latter. However, under better conditions, F_2 animals surpassed F_1 in either development of the body, fleece quality or fleece weight. It is evident that feeding and management conditions play a decisive role in animal improvement. The better-cared group of F_2 yearling ewes attained the following averages: body weight-41.3 kgs, height at withers-64.2 cm, fleece weight-4.69 kgs, yolk content of the fleece-20.65%, clean wool yield-53.85%, staple length-7.88 cm, average fineness of the fibres being of 60's quality.

1.察北牧场蒙古羊毛被中含细毛52.95%,一代杂种提高到82.32—87.36%,二代杂种提高到97.23—97.32%,五一牧场蒙古羊细毛含量为48.59%,一代杂种提高到79.48—91.17%。用细毛公羊与蒙古羊杂交,二代以后基本上已达到同质程度。 2.二代杂种羊毛细度为60—64支,营养较好者羊毛略粗。 3.将察北牧场小家畜组和二道渠组的二代杂种加以比较后,表明在不良的生活条件下,二代杂种发育较一代杂种为差,有退化现象。但在管理较为周到的条件下所育成的二代杂种,无论在体格发育和毛质、毛量方面都超过了不良生活条件下的一代杂种,证明主要关键在于饲养管理的条件。察北牧场小家畜组的二代杂种母羊,在一岁时平均体重达41.3公斤,体高64.2厘米,剪毛量4.69公斤,油脂含量20.65%,毛率53.85%,毛长7.88厘米,细度60支,已达到或接近育种目标。

Under the action of a twisting moment M_z(e.g. due to eccentric loading on the bridge fioor), the reaction of a bridge superstructure may be classified into two parts: the pure twisting moment M_k formed by the shear flow along the whole crossection of fhe superstructure(including the top and bottom lateral systems), and the bending—twisting moment M_(u.k)formed by the shearing forces in the maingirders(lateral systems not included)sustaining different bending moments. Pure twisting does not induce stresses...

Under the action of a twisting moment M_z(e.g. due to eccentric loading on the bridge fioor), the reaction of a bridge superstructure may be classified into two parts: the pure twisting moment M_k formed by the shear flow along the whole crossection of fhe superstructure(including the top and bottom lateral systems), and the bending—twisting moment M_(u.k)formed by the shearing forces in the maingirders(lateral systems not included)sustaining different bending moments. Pure twisting does not induce stresses in flangcs(or chord member) of mainginders, while bending-twisting does. To assure a bridge superstructure functioning in space as a whole, it is necessary to provide it with both top and bottom leateral system and to proportion the cross frames adquately. The relative magnitude of M_k and M_(u.k)is an index showing to what degree the space action of a bridge superstrecture as a whole has been developed. This ratio will depend upon the relative rigidity of crossframes(against shearing deformation)and maingirdes(against bending). Using simple method of theory of structure, the author derives practical formulas for computing two- or multi-girder bridges equipped with single or several crossframes.

在承受扭矩(例如由于桥面偏心荷载)M_z时,桥孔结构的作用可分为两部份:扭作用M_k和弯扭作用M_(u.k)。扭矩由桥孔结构整个截面(包括顶、底联结系)对扭转的抗力(剪力流)组成,并不在主梁弦杆成翼缘中引起应力。弯扭矩由各主梁(不包括顶、底面联结系)承受不同的弯矩而在各梁截面上发生相应的剪力组成,并对主梁弦杆(或翼缘)应力有直接影响。设置顶、底面联结系并适当地布置断面联结系是保证桥孔结构空间整体作用的必要条件。M_k 和M_(u.k) 的相对比值是桥孔结构空间整体作用发挥程度的指标。这个比值视断面联结系抗剪与主梁抗弯的相对刚度而定。本文利用结构力学的简单方法,导出了具有单片或数片断面联结系的双主梁或多主梁桥的实用计算公式。

At the present, kenaf anthracnose has become very generally distributed in China. Its introduction is traced back to 1908, concurrent with the importation of kenaf seeds from India. This disease is carried mainly in seeds. Secondary infection in field takes place through the agencies of rain, wind and inseets. The epiphytotic occurs in rainy season. It does not develop in regions with light precipitation, where kenaf is cultivated under irrigation. Tire spores of this anthracnose fungus survive two years under...

At the present, kenaf anthracnose has become very generally distributed in China. Its introduction is traced back to 1908, concurrent with the importation of kenaf seeds from India. This disease is carried mainly in seeds. Secondary infection in field takes place through the agencies of rain, wind and inseets. The epiphytotic occurs in rainy season. It does not develop in regions with light precipitation, where kenaf is cultivated under irrigation. Tire spores of this anthracnose fungus survive two years under dry condition. But they die within one year when burried in soil under moist condition. The fungus within infected seed remains viable over 31 months. Treatment of the diseased seeds in hot-water after presoaking will notcompletely eliminate the fungus. When the kenaf seeds are sown early in the season, 80% of the infected seedling produced by diseased seed die before the rainy season. Therefore early sawing may reduce the primary sources of infection. All the northern varieties, such as Tashgan and Xuaneng No. 1, are very susceptible. Southern varieties, such as Madras Red, is resistant to the disease when cultivated in north China. In 1956, we have sucessfuHy selected out 33 strains which produce ripe seeds from the variety Madras red, which is formerly non-seed-producing in north China. These new strains are being released for production in north and northeastern China.

1.洋麻炭疽病早在1912年即于台湾发現,以后传到內地,按其引种的来源分析,是自印度传入中国的。2.洋麻炭疽病菌在土壤中一年左右即死去,在水中的炭疽病孢子能活5个月以上。种子在貯藏的情况下,带在种子外面的炭疽病菌两年死淨。带在种子內部的炭疽病能活到31个月以上,但随着貯藏期限的延长,炭疽病菌逐漸死去。秋耕对消灭土壤中炭疽病菌有显著效果。3.用湿热方法消毒洋麻种子內部的炭疽病菌时,由于洋麻品种不同,及同品种而栽培条件、收获时期、貯藏条件不同而影响到种子質量不一,因之其吸水速度也不同,虽以用同样方法处理,效果不一致,不能稳定其效果。4.早播时洋麻带有炭疽病菌的幼苗,容易在雨季未来之前死去,減少雨季来后中心发病株,有減輕发病的效果。5.洋麻炭疽病的传播根源是种子,病害能否流行成災决定于雨量的多少及雨季来的早晚?胁〉谋狈叫推分?在其生长季节中,如果只有一个月份的雨量在120毫米左右,其他月份在60毫米以下,炭疽病发生得很輕,或不发生。抗病性強的南方型品种如馬德拉斯紅茎洋麻及选出的抗病品系,在其生长季节中,如果有一个月份的降雨量超过200毫米,其他月份降雨量在100毫米左右,炭疽病发生得很輕,或不发生。在华北地区一般来...

1.洋麻炭疽病早在1912年即于台湾发現,以后传到內地,按其引种的来源分析,是自印度传入中国的。2.洋麻炭疽病菌在土壤中一年左右即死去,在水中的炭疽病孢子能活5个月以上。种子在貯藏的情况下,带在种子外面的炭疽病菌两年死淨。带在种子內部的炭疽病能活到31个月以上,但随着貯藏期限的延长,炭疽病菌逐漸死去。秋耕对消灭土壤中炭疽病菌有显著效果。3.用湿热方法消毒洋麻种子內部的炭疽病菌时,由于洋麻品种不同,及同品种而栽培条件、收获时期、貯藏条件不同而影响到种子質量不一,因之其吸水速度也不同,虽以用同样方法处理,效果不一致,不能稳定其效果。4.早播时洋麻带有炭疽病菌的幼苗,容易在雨季未来之前死去,減少雨季来后中心发病株,有減輕发病的效果。5.洋麻炭疽病的传播根源是种子,病害能否流行成災决定于雨量的多少及雨季来的早晚?胁〉谋狈叫推分?在其生长季节中,如果只有一个月份的雨量在120毫米左右,其他月份在60毫米以下,炭疽病发生得很輕,或不发生。抗病性強的南方型品种如馬德拉斯紅茎洋麻及选出的抗病品系,在其生长季节中,如果有一个月份的降雨量超过200毫米,其他月份降雨量在100毫米左右,炭疽病发生得很輕,或不发生。在华北地区一般来說,雨季早在6月份来,炭疽病发生得即較重,晚在7月份来,发生得即較輕,再晚些发生的就更輕,或不发生。6.在少雨而有灌溉条件地区如內蒙河套地方开辟新麻区,炭疽病是流行不起来的,用塔什干品种試种結果,生长的并不次于旧麻区。7.用早播、肥培、稀植,再加以单株选择的方法,現在已經从馬德拉斯红茎洋麻中选育出33个抗炭疽病強的品系,其中313、228、159、261等品系,不但适于华北栽植,将来在东北栽植亦具有很大希望。1958年已在华北及东北选点試种。8.种植新的抗病品系,首先要繁殖淨种;大面积推行时一定要在彻底停种北方麻的基础上单独种植。还要配以綜合防治炭疽病的措施:拌种,早播,早间苗,輪作,秋耕。另外还要严禁由疫区引种,以免传进炭疽病菌。

 
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