查询词典 stud mating

Near the female spider, spider hung in the distance waving constantly have to foot, if fixed Fuzhao female and male spider can be carried out close to the female mating, the male semen to be with their feet into the female spermatheca in .

在靠近雌蛛前，雄蛛在远处不断地挥舞脚须，若雌蛛伏着不动，雄蛛才得以靠近雌蛛进行交配，雄蛛用脚须把精液送进雌蛛的受精囊中。

The spermatophorins are transferred into the female sperm receptive organs and take part in the forming process of the spermatophore. During mating, the functional proteins transferred with the sperm can decrease female receptivity, increase egg production, and promote sperm storage and competition.

精包结构蛋白参与精包的形成；功能蛋白在交配过程中随精子一起转移到雌虫体内，导致雌虫行为和生理的深刻变化，如降低雌虫再交配率、提高产卵量、促进精子转移、储存和竞争等。

Firstly, the developing principles of the cylindrical internal helical gear are proposed through analyzing the movement and geometry requirements, which provides continuous contact between the mating gear surfaces. The tooth surface of the internal helical gear in the new gearing can be imagined as being generated by the normal section of the conjugated surface of the ball-tooth, moving along the radial projection of helix line of the tooth-root circle. Also, the proposed surface can be approximate tangent to the conjugated surface of the ball-tooth along a spacial curve.

首先，通过分析保证行星轮作螺环运动时与内斜齿轮实现连续啮合传动的运动和几何条件，提出了圆柱内斜齿轮齿面的两种形成原理：即由球齿运动包络曲面的法截面沿其齿根圆螺旋线在径向的投影进行拓展所形成的内齿面，以及与球齿运动包络曲面呈近似相切接触的等螺距齿面构成的内齿面。

The genic polymorphism is that there are two or more genotypes in the same locus of chromosome in the group of random mating. It is an important factor to determine the susceptivity of desease, the diversity of clinical symptom and the reaction of medication.

所谓基因多态性是指在一随机婚配的群体中，染色体同一基因座位点上有两种或两种以上的基因型，它是决定人体对疾病易感性、临床表现多样性及药物治疗反应差异性的重要因素。

This suggests that assortative mating has been enhanced in sympatry.

这表明选型交配在在同一个区域生存却不杂交而形成混合物种的动物之中增强了。

Never before captured on film, we witness majestic sliding, an epic fight for toboggan territory and the unique mating ritual of this rare icon of the Canadian Prairie.

观众将首次目睹以往从未被影片记录的壮观的滑行，为雪橇领土而发起的浩大战争和加拿大草原上具有象征性的独特婚恋典礼。

Based on the Liriodendron interspecies hybridization study by professor Ye Peizhong,according to the satisfying and exact mating system and field design,the reciprocal cross with extensive genetic background of Liriodendron tulipifera Linn., the backcross and F 1 crossing which had never been made, and the genetic analysis of heterosis of the hybrid tulip tree were carried out.

在叶培忠先生的鹅掌楸属种间杂交育种研究基础上按遗传设计与环境设计开展了扩大北美鹅掌楸遗传基础条件下的正反交以及前人从未做过的回交和F1 间杂交，并进行了杂种马褂木杂种优势的遗传分析。

In the laboratory,unmated females were placed with randomly chosen males to determine whether,given the opportunity,females would be found mating with the largest available males. I exposed amplexing pairs to other males to determine if larger or smaller males would displace amplexing males.

在实验室内，令未交配雌体选择随机选出的雄体，观测雌体是否与最大的雄体交配；将抱对的蛙暴露于其它雄蛙，观测其它较大或较小的雄蛙是否取代已抱对的雄蛙。

I suppose that's why Sex and the City is such an unsentimental examination of relationships and mating habits.

我想那就是为什么《欲望城市》对男女关系和两性习惯是那么冷静地看待。

The social structure of mating in animals,and particularly in vertebrates, is an important ecological parameter.

交配体制动物，特别是脊椎动物，其交配的社会结构是重要的生态特征。

They have quite a lot of work to do.

他们有许多工作要做。

Let us give you a more elaborate example of this process.

让我们给你这个过程的更多的详细例子。