助手标题  
全文文献 工具书 数字 学术定义 翻译助手 学术趋势 更多
查询帮助
意见反馈
   four-years 的翻译结果: 查询用时:0.197秒
图标索引 在分类学科中查询
所有学科
更多类别查询

图标索引 历史查询
 

four-years
相关语句
  四年
     The Enlightenment of Foreign Successful Cooperative Educational Patterns to Developing Four-years Higher Vocational Education in China
     国外成熟的合作教育模式对发展我国四年制高职教育的启示
短句来源
     Based on a four-years observation of the reproductive behavior of a Sichuan golden snub-nosed monkey group, this research found more male than female newborn infants and its secondary sex ratio was biased towards males (♀∶♂=1∶1.71).
     本研究通过对一个秦岭川金丝猴群生育行为连续四年的观察,发现该种群新生雄性幼崽的数量多于雌性幼崽,种群的次级性比存在偏离(♀∶♂=1∶1.71)。
短句来源
     Based on introducing foreign successful cooperative educational patterns,the article analyzes the several problems of three-years higher vo cational education developing at a high speed in china from mul tiple angles and puts forward the bold supposition that regards developing four-years higher vocational edu cation as a chance to reform the teaching patterns of higher vocational education at a large scale.
     本文在介绍国外成熟的合作教育模式的基础上,多方面分析了我国现有三年制高职教育在高速发展的同时存在的若干问题,提出了以发展四年制职教育为契机,大幅度改革高职教育教学模式的大胆设想。
短句来源
  “four-years”译为未确定词的双语例句
     It is presumed to have lived for six years or so. (2) The growth rate of B. belcheri ttingtauense decreased with age. The average rates of the one-, two-, three- and four-years old amphioxus were 1 .25, 1 .25, 1 .08 and 0.75 mm/month, respectively.
     (2)在Ⅰ,Ⅱ龄时生长较快,平均年生长13-15mm,Ⅲ龄后生长速度减慢,即使同一年龄组的文昌鱼,在不同季节其生长速度也不同。
短句来源
     During four-years experimental teaching, Ningbo TV University has accumulated experience, obtained achievements, but also met with some problems.
     宁波电大通过四届会计学本科学员的会计模拟实验教学,积累了经验,取得了显著成绩,也发现了一些问题。
短句来源
  相似匹配句对
     The Four Feathers
     四根羽毛
短句来源
     Part four.
     第四部分,议程设置理论的意义。
短句来源
     On the"Four-Respects
     “四个尊重”解读
短句来源
     The Four-Stringed Pipa
     琵琶——中国弹弦乐器(英文)
短句来源
     THE VESTIGE OF YearS
     岁月有痕
短句来源
查询“four-years”译词为用户自定义的双语例句

    我想查看译文中含有:的双语例句
例句
为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。
  four-years
Fine root distribution and structural root characteristics of four-years-old multipurpose woody species with potential for use in agroforestry systems were investigated on an Alfisol in the forest savanna transition zone of south-western Nigeria.
      
The average increase in live-weight gains of the cattle was at a rate of 445 g/animal/day during the four-years of the study.
      


A tank experiment to study the rainfall characteristics,degree of slope and kinds of crops in relation to erosion of the Szechuan purple brown soil was carried out on the experimental farm of the University of Nanking in Chengtu during the period from 1941 to 1945 inclusive.The text consists of the results,of four years only,that of the first year being used for reference.

本试验就成都南郊金陵大学农场利用箱具装置以求降雨,坡度及作物种类对于四川紫棕土冲蚀之关系,试验自1941年须始至1945年年底为止,本报告包括1942至1945年四年记录;最初一年记录仅供参考未列入计算。试验中之箱具係木制,长1.8公尺,宽0.35公尺,深0.33公尺,共四具,分别置于5%,10%,20%及30%之四种坡度上,内盛四川红色盆地中之一种紫棕色粘土。降雨之时,每廿小时测定雨量,逕流及土壤冲矢量各一次,试验中192及1943两年行播芝蔴代表茎葉稀疏之作物,1944及1945年密播大豆代表茎菜密茂之作物。四年结果中之要点如下:(i)本试验四年中成都年降水量总平均为959.9公厘,最少年为689.9公厘而最多年为489.8公厘,本试验芝蔴年度平均降水量为734.0公厘,而大豆年度平均降水量为1185.8公厘。(ii)成都降雨烈度可暂按廿四小时内雨量,分为0—3.9m.m.,4—7.9m.m.,8—11.9m.m.,12—23.9m.m.,24—17.9m.m.,4(?)—95.6m.m.,96—191.9m.m.,等七级,四年中廿四小时内最多雨量可自84.2公厘至183.2公厘不等,此项烈雨可降于六月初...

本试验就成都南郊金陵大学农场利用箱具装置以求降雨,坡度及作物种类对于四川紫棕土冲蚀之关系,试验自1941年须始至1945年年底为止,本报告包括1942至1945年四年记录;最初一年记录仅供参考未列入计算。试验中之箱具係木制,长1.8公尺,宽0.35公尺,深0.33公尺,共四具,分别置于5%,10%,20%及30%之四种坡度上,内盛四川红色盆地中之一种紫棕色粘土。降雨之时,每廿小时测定雨量,逕流及土壤冲矢量各一次,试验中192及1943两年行播芝蔴代表茎葉稀疏之作物,1944及1945年密播大豆代表茎菜密茂之作物。四年结果中之要点如下:(i)本试验四年中成都年降水量总平均为959.9公厘,最少年为689.9公厘而最多年为489.8公厘,本试验芝蔴年度平均降水量为734.0公厘,而大豆年度平均降水量为1185.8公厘。(ii)成都降雨烈度可暂按廿四小时内雨量,分为0—3.9m.m.,4—7.9m.m.,8—11.9m.m.,12—23.9m.m.,24—17.9m.m.,4(?)—95.6m.m.,96—191.9m.m.,等七级,四年中廿四小时内最多雨量可自84.2公厘至183.2公厘不等,此项烈雨可降于六月初至八月底之间,廿四小时内大于24公厘之雨日可自七日至十七日不等。(iii)芝蔴年度年降水量虽较大豆年度为低,但逕流占年雨量百分数,依坡度顺序,则前者各为16.95%,19.23%,25.71%及27.66%而后者各为3.96%,9.06%,9.63%及10.62%。(iv)四年中逕流量之实际数值,依坡度顺序,芝蔴年度各为129.11公厘,143.79公厘,193.54公厘及216.64公厘,而后者各为53.37公厘,120.59公厘,121.60公厘及135.07公厘。逕流逐月分布隨雨量分佈而变异,惟大豆作物有使逕流分佈百分数,向各月分散之趋势。又芝蔴年度七月份或八月份之逕流量可占年逕流量70%以上。(v)逕流之大部由于廿四小时内大于24公厘之雨量所发生,各坡度上大于24公厘之烈度等级中,在芝蔴年度,其分佈百分数之和幾全人於80%,而在大豆年度,其分佈百分数之和,自约38%至90%以上不等。芝蔴年度逕流量之实际数值较大豆年度为大,但逕流量隨坡度增加之比率则芝蔴年度较大豆年度为小。(vi)土壤冲失量之实际数值,依坡度顺序,芝蔴年度各为每市亩773.91市斤,832.5市斤,2004.93市斤及2822.62市斤,而大豆年度各为每市亩270.02市斤,370.50市斤,666.53市斤及762.95市斤,大豆年度中雨量特別丰沛之年,大豆护土力在大坡度上(坡度30%)更为显盖。(vii)芝蔴年度月雨量对于土壤冲矢量之影响大于对于逕流量之影响,月雨量增多,使同月土壤冲失量增加之百分数较使同月逕流量增加之百分数为大,大豆年度则反是。芝蔴年度土壤冲失量之实际数值较大豆年度为大,目土壤冲失量隨坡度增加之比率,芝蔴年度亦较大豆年度为大。(viii)据本试验情形,某一日之前五日内如降落巨雨,则该日急雨可发生甚大量之逕流及土壤冲失,芝蔴年度此种情形甚显,但大豆年度则不显。(ix)大豆作物之护土力,由于宽阔平向之叶面及密茂之莖叶可遮蔽地面以防雨滴之打击,而落叶护土亦可使地面流水澄清而维持土壤之渗漏速率,又麦稈覆盖地面之护土效力甚宏,如于大豆莖叶向未郁閉之前用之,可防初夏急雨之冲蚀。(X)自成都向南至仁寿县一带之紫棕土斤陵地,可行玉米与大豆等高行栽之间作制,惟大豆宜密植以收护土之效,若能于生长前期,地面覆盖麦稈,则土壤冲蚀之害可大减。

For four years(1951—54)time determination data,after allowed for personal equation and referred to the mean observatory which is formed by the International Time Office(B.I.H.),seasonal fluctuation with amp- litude equals to 25 ms is found.That is,the clock corrections observed at Zi-Ka-Wei Observatory seem larger in May while smaller in February and July as compered with their annual mean. The Δ(α_α) type error of the fundamental catalogue(FK_3)contributes to the seasonal fluctuation with an amount of 6ms only....

For four years(1951—54)time determination data,after allowed for personal equation and referred to the mean observatory which is formed by the International Time Office(B.I.H.),seasonal fluctuation with amp- litude equals to 25 ms is found.That is,the clock corrections observed at Zi-Ka-Wei Observatory seem larger in May while smaller in February and July as compered with their annual mean. The Δ(α_α) type error of the fundamental catalogue(FK_3)contributes to the seasonal fluctuation with an amount of 6ms only. Inclination of atmospheric equi-density surface in pre-earth layer which is calculated with air pressure and temperature data taken from Shanghai and Lig-Yang(180km west of Shanghai)shows annual variation of 2′.5, thus the effect of refraction anomaly corresponding to the inclination calcu- lated is practically null. Besides,room refraction is also harmful.By the air temperature data taken from the east and west wall inside the observing room,the effect of room refraction thus estimated may become 8 ms in summer and turn to zero in winter. However,after draw out the influence of Δ(α_α) type error and room re- fraction,the seasonal fluctuation still appear.It is thought that thermal deformation of the transit instrument may be account for,as the diurnal change of air temperature and the temperature drop at night both signi- ficantly correlate to the seasonal fluctuation of time observation.

中星仪测时的组内符合程度比组外符合程度约高一倍,这已是人所共知的事实.一般认为引起组外符合程度较差的因素是仪器情况的变更和反常折射的存在.本文根据1951—1954年间徐台的天文测时结果求出它的季节性变化,并考虑星表误差、反常折射以及其他气象因素在测时结果所引起的影响.在上述期间,徐台天文测时所用的是一具口径80mm 焦距86cm 的帕兰(Prin)中星仪,附有马达带动人手操纵的接触测微器,仪器的水平轴是用水银盘控制的.主要的观测者为龚惠人(K),沈祖耀(S),罗定江(L)三人.

Rapana pecheliensis,being amongst the largest rachigloseans found on the north coast of our country,is of high value in fishery.Tehang-Si described the general features aud the form of egg capsule of this snail in 1936 and 1955 respectively,but its life history so far is known,has escaped investi- gation.The present paper is to report the reproduction and embryonic development of this animal and tends to give a closer comparison in these respects between it and other rachiglossans ever studied.In the past four...

Rapana pecheliensis,being amongst the largest rachigloseans found on the north coast of our country,is of high value in fishery.Tehang-Si described the general features aud the form of egg capsule of this snail in 1936 and 1955 respectively,but its life history so far is known,has escaped investi- gation.The present paper is to report the reproduction and embryonic development of this animal and tends to give a closer comparison in these respects between it and other rachiglossans ever studied.In the past four years,in addition to the trac ment of cell lineage and of morphogenetic process of embryonic stages data bearing upon the breeding season,sexual activities and spawning habit were collected.The breeding season of R.pecheliensis,like that of its sister species,R.thornasiana,lasted from the begining of June almost to the middle of August.Nevertheless this period eeemed to be affected by changes of temperature.During spawning,groups of eggs,after being fertilized one after another in a chamber just posterior to the pallial oviduct,were extruded into the latter where they became encapsulated.In the whole lumen of this duct of a female with her shell over 7.6 m.m.in height,usually no lees than two to three capsules being in formation might be found at a time,the larger and more complete one being nearer to its exit.Examinations of new-laid capsules did not reveal nurse eggs which had been found in other rachiglossans such as Purpura,Buccinum and Fasiolaria.All eggs within a capsule began to segment after the capsule was laid at temperature ranging from 21.0° to 26.5℃.The shape of blastomeres together with yolk lobe resulting from the first cleavage or the second one and the relation of cleavage plans in the later stage appeared identical completely with that of R.thomasiana,Nassa mutabilie and N.reticulatus,bnt somewhat different from that of Purpura lapillus,though in later stages of cleavage all these snails expressed an uniformity specially in the pattern of arrangement of blastomeres.Tbe presence of the yolk lobe in the first cleavage of R.pecheliensis had resulted in the formation of a trefoil btage which was very similar to that occured in the development of Ilyanassa and Dentalium.The only difference between them lies in the manner of movement by which the yolk lobe was formed.In R.pechelieusis,the yolk lobe appeared as soon as the blastomeres AB and CD were constricted off from its animal pole,while in the other two,this structure came off entirely from the vegetal pole of the egg.As cleavage proceeded a blastoderm cap came into view and when it covered three seventh of the surface of the yolk cell 4D epibolic gastrulation took place.Before the closing of the blaetopore the endoderm cells 4A.4B.and 4C.divided repeatedly to form the ventral lip of the pore.This and the delay of their becoming invested by the ectoderm cells showed that the cleavage of R.pechelienc-is was in some degree alike a meroblastic type,mostly due to the concentrating up of the yolk into 4D.Within the capsule embryos passed through a veliger stage.It was about four to five weeks from the time the ova were laid until the fully formed veligers escaped from the capsule.The organogenesis in the veliger stage of R.pecheliensis closely resembled that of Nassa reticulatus.During or just after hatching the rudiments of the osphradium,gill filaments,and heart had not yet appeared,to say nothing of that of sexual organs.

1、强棘红螺的产卵期与红螺Rapana thomasiana者相同,是在每年6——8月。产卵盛季在7月下半月。产卵时所需水温为20°—26℃,最适宜水温为23°—25℃ 。 2、雌雄成体螺于产卵前1——2日先进行交配。参加交配的两个体并元身体大小的比例关系。作者于1954年7月曾在青岛水族馆发现一雌性强棘红螺与一雄性红螺进行交配,但未能观察其产卵与胚胎发育。此种杂种交配的情况过去尚无人报告。从能够进行交配以及在生殖、产卵、和卵子发育方面的相似来看,上述两种红螺的种间关系值得重新加以研究。 3、于生殖季节内,雌螺多在黎明前后开始产卵,少数在下午或其他时间开始产卵。在正常情况下,成体螺一次将卵产完,但产卵历时长短(一般为1——2月)和卵袋产出数目多寡,均与雌螺大小成正比关系。最小而能够产卵的雌螺的壳高为50毫米。 4、在产卵期间,每一母体的输卵管外套段内有1——2个卵袋同时在形成着。由同一母体所产出的卵袋,以产出的先后不同,而有不同长度,先产者较短,后产者较长。同时由于此长度的不同,各卵袋中所含卵子数量又有多寡之分。不过,尽管有上述各种不同,但同一袋内所有卵子均可进行分割并发育为幼虫。 5、强棘红螺卵子早期分割的...

1、强棘红螺的产卵期与红螺Rapana thomasiana者相同,是在每年6——8月。产卵盛季在7月下半月。产卵时所需水温为20°—26℃,最适宜水温为23°—25℃ 。 2、雌雄成体螺于产卵前1——2日先进行交配。参加交配的两个体并元身体大小的比例关系。作者于1954年7月曾在青岛水族馆发现一雌性强棘红螺与一雄性红螺进行交配,但未能观察其产卵与胚胎发育。此种杂种交配的情况过去尚无人报告。从能够进行交配以及在生殖、产卵、和卵子发育方面的相似来看,上述两种红螺的种间关系值得重新加以研究。 3、于生殖季节内,雌螺多在黎明前后开始产卵,少数在下午或其他时间开始产卵。在正常情况下,成体螺一次将卵产完,但产卵历时长短(一般为1——2月)和卵袋产出数目多寡,均与雌螺大小成正比关系。最小而能够产卵的雌螺的壳高为50毫米。 4、在产卵期间,每一母体的输卵管外套段内有1——2个卵袋同时在形成着。由同一母体所产出的卵袋,以产出的先后不同,而有不同长度,先产者较短,后产者较长。同时由于此长度的不同,各卵袋中所含卵子数量又有多寡之分。不过,尽管有上述各种不同,但同一袋内所有卵子均可进行分割并发育为幼虫。 5、强棘红螺卵子早期分割的形式,与红螺者完全相同,舆两种织纹螺Nassamutabilis,Nassa reticulatus者?

 
<< 更多相关文摘    
图标索引 相关查询

 


 
CNKI小工具
在英文学术搜索中查有关four-years的内容
在知识搜索中查有关four-years的内容
在数字搜索中查有关four-years的内容
在概念知识元中查有关four-years的内容
在学术趋势中查有关four-years的内容
 
 

CNKI主页设CNKI翻译助手为主页 | 收藏CNKI翻译助手 | 广告服务 | 英文学术搜索
版权图标  2008 CNKI-中国知网
京ICP证040431号 互联网出版许可证 新出网证(京)字008号
北京市公安局海淀分局 备案号:110 1081725
版权图标 2008中国知网(cnki) 中国学术期刊(光盘版)电子杂志社