查询词典 sperm

Objective To analyze the correlation between mitochondrial DNA and human sperm mobility.

目的 探讨线粒体DNA与人精子活力间的关系。

The studies of morphology and physiology of sperm maturation in tigerprawn, Penaeus monodon .

官建权 (1998 )。草虾精子成熟之形态及生理上变化之研究。

Methods Sperm recovery procedures were done in infertile men with obstructive azoospermia(n=37) and nonobstructive azoospermia(n=28) by PESA or PTSA.

结果OA组32例在附睾获得精子，5例在睾丸获得精子；NOA组7例在附睾获得精子，11例在睾丸获得精子。

It is probably that there were not Ca〓 channel on the guinea pig sperm PM, because the Ca〓 channel blockers verapamil, nifedipine, diltiazem and D600 promoted acrosome reaction in synchronous and nonsynchronous cultural systems.

豚鼠精子质膜可能无Ca〓通道，因为verapamil、dilliazem和D600等对获能和未获能的精子的顶体反应均具有显著的促进作用。

In addition, the Medical Scientific Committee on the British Government scientists have found that in recent decades to reduce male sperm count and testicular volume of octyl phenol with narrow, double-Fen A and D n-methyl-phthalic acid resin, and these substances are widely used in manufacture of baby bottles, canned food boxes, food packaging bags, such as coating the inner wall.

此外，英国政府医学科学委员会的科学家们发现，近几十年来男性精子数量减少和睾丸体积缩小与辛基苯酚、双芬A和丁基苯甲基酞酸脂有关，这些物质广泛用于制造奶瓶、罐头盒、食品包装袋等的内壁涂层。

Urumqi 830011, ChinaAbstract: Objective: To investigate the influences of the sperm of male rats impact,when octyl phenol, nonylphenol joint exposured.

目的：观察辛基酚、壬基酚联合染毒时，对雄性大鼠精子状况的影响。

Group in the polyester in four patients (36%) to the first 14 months significantly reduced when the sperm count; in the blend in a group (9%) to 10 months, suffering from oligospermia, and that is, the control group semen quality cotton group no change.

在聚酯组中有4位病人（占36％）到第14个月时精子数明显减少；在混纺组中有1位（占9％）到第10个月时患了少精子症，而对照组即纯棉组的精液质量无改变。

Nearly half a century, in the world, male sperm count decreased by 4 ~ 5 as, male infertility is mainly expressed in azoospermia and oligospermia.

近半个世纪以来，在世界范围内，男性精子数下降了4～5成，男性不育主要表现为无精子及少精子。

There are many factors resulted in male infertility. Majority is associated with sperm count, morphology and motility. Men with oligospermia, asthenospermia, teratozoospermia and azoospermia account for 20~25% of the cases.

引起男性不育的因素有很多，大部分与精子的数目、形态及运动功能有关，其中由于精子生成过程的停滞或障碍所导致的少精子、弱精子、畸形精子和无精子症占男性不育的20～25％。

In particular, it has remained unclear how oogamy arose from isogamy, a more simple form of sex in which ery similar reproductie cells take on different "mating types" but do not differentiate as distinct sperm and egg.

尤其是异配生殖如何由同配生殖转化而来，我们对此还懵懵懂懂。同配生殖是一种更为简单的结合形式，在此过程中，非常相似的生殖细胞不管三七二十一地就与不同的配子结合，都不分这些配子是&公&是&母&。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐