不育

When temperature arrived to 30℃, no individual went to diapause whether daylength short or long.

温度对滞育的影响受光周期的影响，在相同光照条件下，在一定温度范围内，随着温度的上升，滞育率下降，当温度上升幅度达到30℃，无论长短光照条件下均不出现滞育个体。

Higher temperature (24℃) inhibited diapause,and diapause did not occur at 27℃.

相同短光照下，低温促进滞育，在15℃、18℃和21℃下滞育率分别为100%、93.1%和66.7%；高温(24℃)抑制滞育，滞育率仅为13.3%；温度为27℃时不滞育。

However, many problems about the possible mechanisms of diapause in silkworm remain uncertain.

家蚕是以卵滞育的经济昆虫，早在20世纪初，国外学者通过对家蚕滞育性的研究，发明了蚕卵的人工孵化技术，并一直沿用至今，对蚕丝业的发展作出了巨大贡献，但是关于家蚕的滞育机理，有许多问题至今仍不清楚。

When the eggs entered diapause at a temperature,it was not remarkable to terminate diapause with the same temperature.

当卵在某一孵育温度下进入滞育时，继续以相同温度对滞育进行解除，效果不明显，显示出滞育卵对高温反应的多样性。

The experiment results showed that at the beginning of diapause, some inhibition existed in the metabolism of converting glycogen to sorbitol and glycerol in the artificially synthesized hormone induced diapause eggs and it led to increment of trehalose, sorbitol and glycerol in the eggs and advancement of diapause termination in them. As a result, some eggs could not complete fetation and died before hatching.

试验结果表明，合成滞育激素诱导形成的滞育卵在滞育初期糖原向山梨醇和甘油的代谢反应中存在某种障碍，使卵内海藻糖、山梨醇和甘油含量减少，蚕卵滞育不深，滞育提前解除，以致胚胎发育中能量供应不足，部分卵不能完成胚胎发育而在孵化前死亡。

The analysis results for community species component and plant diversity showed that exclusion did change the species component and increase plant diversity remarkably, while the indicateor life-form structure, palatability analysis indicated that community for old exclusion is becoming perennity and unpalatability, whereas community for comparative exclusion is under stable non-equilibrium condition, in the view of vegetation coverage, mean height, biomass, palatability of plant composition, community for old exclusion has lower than new, comparative exclusion which proves partly that long-term exclusion can not increase grazing values for semi-arid rangeland.

对3种封育措施群落组成和生物多样性的分析结果表明，封育改变了群落的组成成分并增加了生物多样性，同时对群落植物的生活型、饲用价值分析计算结果则显示，老封育的群落植物逐渐向多年生发展，放牧价值开始降低，而对照区则明显处于一种非平衡的稳定状态。从3种措施植被的盖度、高度、生物量和饲用价值来看，老封育区均低于新封育区和对照区，表明长期封育不利于促进并提高草场的放牧利用价值。

The design of transplanter for rice growing in cupulate tray is the critical link in rice growing in cupulate tray technology,the design method is not mature,for exploring a new design method,having discussed neural network s serviceability in agriculture machinery mechanism design with the theoretical basis of self-organizing feature mapand the back-propagation network,the integrated SOM-BP nerve network model is applied in the field of transplanter s critical mechanism design for rice growing,al...

水稻钵育栽植机的设计是实现水稻钵育栽培技术的关键环节，区别于传统的水稻栽植机其关键部件的设计方法还不成熟，在理论研究方面还不完善。为探索新的设计方法，论述了神经网络算法对农业机械设计的适用性，以自组织特征映射网络SOM 和误差反向传播网络BP为理论基础，将SOM-BP集成神经网络模型应用于水稻钵育栽植机关键部件设计领域，建立神经网络模型，通过集成网络训练，得到设计结果。验证了SOM-BP神经网络在农业机械机设计中的正确性和精确性。

Spd and Spm evidentlydropped more rapidly in the abortive ovules than those in the normal ones,which indicats that lower contents and more rapid decrease of Spd and Spmduring the embryogenetic process might have a close relationship withembryo abortion.The studies also showed that iow ratios of nn-1and nn-1might hinder embryo development.

败育胚珠中的Spd和Spm含量在胚胎败育期的下降速度显著大于正常胚珠，两者含量低以及在胚珠发育进程中较大的降幅与胚胎败育密切相关。nn-1和nn-1比值低亦不利于胚胎发育。

Contraception, sterilisations, fertilisation, vasectomy, venereal disease, sexually transmitted diseases, gender reassignment or any other form of sexual related condition, infertility and any related condition or form of assisted reproduction.

被保险人避孕、绝育手术、治疗不孕症、受精、输精管切除手术、治疗性病、变性手术、指定性别或其他任何与性别有关的情况、不育及其他任何帮助生殖的方式

Fertile and infertile men were recruited to observe the changes of five reproductive hormones (ICSH, FSH, PRL, T, E_2) and three immunoglobulins in se minal plasma and serum.

对152例生育与不育男性，分组观察精浆和血清中五种生殖激素(ICSH、FSH、PRL、T、E_2)及三种免疫球蛋白(IgG、IgA、IgM)的变化，分析它们之间的相关性以及与精液质量的关系。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷