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study on long
相关语句
  长寿研究
     Study on Long Service of M-P Hot Stove at High Temperature
     马琴式外燃式热风炉高温长寿研究
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  “study on long”译为未确定词的双语例句
     THE STUDY ON LONG PERSISTENCE OF SrAl_2O_4:Eu ̄(2+)
     SrAl_2O_4:Eu~(2+)的长余辉发光特性的研究
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     Study on Long Chain Olefin Polymerization Prepared with Organic Material Supported Ti/Al(Bu)_3/D
     有机物载体Ti/Al(Bu)_3/二苯基二甲氧基硅烷催化长链α-烯烃的聚合研究
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     Study on Long Persistent Luminescence Mechanism of Eu~(2+), Dy~(3+)- co-activated Strontium Aluminate Phosphors
     Eu~(2+),Dy~(3+)共激活铝酸锶发光材料长余辉发光机理探讨
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     The Experimental Study on Long Pulsed Nd:YAG Laser
     长脉冲Nd:YAG激光器的实验研究
短句来源
     Study on Long Period Fiber Grating Fabricated with CO_2 Laser Symmetric Writing Method
     CO_2激光对称烧写长周期光纤光栅的研究
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  相似匹配句对
     The study of C.
     目前各国学者不但研究了各海区C.
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     The study was
     研究了ABS和PVC对PC/ABS共混体系力学性能的影响。
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     Study on the Long Tunnel Construction
     水工超长隧洞TBM施工方法研究
短句来源
     and long term and short term study.
     溯因、归纳与演绎以及长期与短期等方面的基本问题。
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     Long for Easiness
     渴望从容
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  study on long
Reports the Chilean segment of a multicultural, multicountry (Canada, Germany, Israel, Netherlands, South Africa, Sweden, USA) study on long-term marriages.
      
A study on long-term salt-marsh succession using permanent plots
      
Results of an eight-year study on long-term effect of N and P application in a pearlmillet-wheat sequence is reported.
      
Ultrastructural study on long-term cultures of bone marrow cells with histamineproducing stimulating factor (HCSF)
      
The northern European geoid: a case study on long-wavelength geoid errors
      
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A diallel crossing design which contained seven parents of Cunninghamia lanceolata was carried out. From statistical analysis of general and special combining ability, effect in back and self crossing, and heterosis of five characters--height, breast-diameter, numbers of knot and branch, crown-diameterin four year's Cunninghamia lanceolata, the results obtained are as follows: (1) These five quantitative characters are mainly controlled by the effect of general combining ability; (2) There are also some effect...

A diallel crossing design which contained seven parents of Cunninghamia lanceolata was carried out. From statistical analysis of general and special combining ability, effect in back and self crossing, and heterosis of five characters--height, breast-diameter, numbers of knot and branch, crown-diameterin four year's Cunninghamia lanceolata, the results obtained are as follows: (1) These five quantitative characters are mainly controlled by the effect of general combining ability; (2) There are also some effect of special combining ability and back crosses among the detinite parent's combinations; (3) Chinese Fir has considerable self-crossing rate but its failing effect is common, which we should pay attention to avoid or apply in the practice of breeding good strains and in the study on long term breeding; (4) It appears frequently the super-parent positive heterosis. These heterosis often related to general combining ability which could be acted as a standard of selecting parent when we make use of heterosis to breeding.

7个杉木亲本按全双列交配设计,对4年生杉木的树高、胸径、枝盘数、分枝数及冠幅的一般配合力、特殊配合力、反交效应、自交效应及杂种优势作了分析和计算。结果表明:①5个数量性状主要受一般配合力效应所控制,②在特定亲本的交配组合间特殊配合力及反交效应也有一定影响;③杉木具有较高的自交率,但衰退是普遍的,在良种繁育及长期育种中应予注意避免或利用;④在杉木杂交组合中,常出现超亲正向杂种优势,这些杂种优势多与亲本的一般配合力有关。在利用杂种优势的育种中,一般配合力可作为选择亲本的一个标准。

This paper reports the experimental study on long-term diagonal crack width of reinforced concrete beams with rectangular sections.Based on the analysis and measured results of eight beams subjected to long-term two point loads with a shear span ratio of 2.5,the formula for calculating the long-term diagonal crack width is proposed.The predicted

本文对钢筋混凝土矩形梁在长期荷载作用下的斜裂缝宽度进行了试验研究。根据8根剪跨比为2.5的两点集中加载梁在长期荷载作用下的试验结果,提出了长期斜裂缝宽度的计算公式。公式计算值与实测结果吻合较好。

Having studied on long term regular occurrence patterns of main insect pests on crops such as Mythimna separata Walker, Nilaparvata lugens Stl, Cnaphalocrocis medinalis Guenèe, Chilo suppressalis Walker, Tryporyza incertulas Walker, Schizaphis graminum Rondani, Ostrinia furnacalis Guenèe and Helicoverpar armiger a Hübner etc., it was discovered that the periodicity of pest occurrence for M. separata, C. suppressalis, N. lugens, C. medinalis and O. furnacalis...

Having studied on long term regular occurrence patterns of main insect pests on crops such as Mythimna separata Walker, Nilaparvata lugens Stl, Cnaphalocrocis medinalis Guenèe, Chilo suppressalis Walker, Tryporyza incertulas Walker, Schizaphis graminum Rondani, Ostrinia furnacalis Guenèe and Helicoverpar armiger a Hübner etc., it was discovered that the periodicity of pest occurrence for M. separata, C. suppressalis, N. lugens, C. medinalis and O. furnacalis was 16 years approximately. A periodicity of about 12 years also occurred in N. lugens, T. incertulas. An approximately 11 years periodicity for C. suppressalis, C. medinalis, S. graminum and H. armigera was found. A forecast of the trend of the pests for 1996~2000 years is presented.

考查我国农作物重大害虫历史发生状况,研究粘虫MythimnaseparataWalker、稻飞虱NilaparvatalugensStl、稻纵卷叶螟CnaphalocrocismedinalisGuenèe、二化螟ChilosuppresalisWalker、三化螟TryporyzaincertulasWalker、麦蚜SchizaphisgraminumRondani、玉米螟OstriniafurnacalisGuenèe、棉铃虫Helicoverpararmigera(Hübner)等害虫的长期发生规律,初步发现粘虫、二化螟、稻飞虱、稻纵卷叶螟、玉米螟等长期变化有约16年周期现象,稻飞虱、三化螟有12年左右周期性规律,二化螟、稻纵卷叶螟、麦蚜、棉铃虫等发生周期约11年。根据害虫规律性作出“九五”期间发展趋势预测。

 
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