精子的

Objective: To regressive analysis of semen mobility parameters in male infertile semen examination.

目的评价精子动态参数的逐步回归分析法在男性不育症检测中的作用。

For the cryopreservation of red sea bream's sperm, a set of integral cryopreservation m

经筛选确定了真鲷精子冷冻的最佳降温方案：降温方法：0℃(平衡5min)→(-20℃/min)→-150℃(平衡2min)→-180℃解冻方法： 43℃水浴解冻至出现微融化的液体后迅速取出放置在

Development of mature sperm from the testes of normal seminiferous tubules, by a special cell - spermatogonia after splitting from the development.

成熟的精子来自发育正常的睾丸曲细精管，由一种特殊细胞——精原细胞几经分裂发育而来。

It's a slow journey for the sperm, the smallest cell in the human body.

对于精子来说，进入阴道后的行程是一个漫长旅行，因为它们是人类身体里最小的细胞。

MATERIAL AND METHODS: The micronucleus test of mouse bone marrow cell and the sperm abnormality test in rats were used in this study.

材料与方法：采用骨髓嗜多染红细胞微核测试法和精子畸形法评价HY拮抗环磷酰胺所致的遗传物质的损伤作用。

Sperm are a highly specialized cell type derived to deliver the paternal haploid genome to the oocyte.

精子是一种高度分化的细胞，其产生是为了传递父方的单倍基因组给卵子。

Once within the egg wall, the sperm's nucleus is drawn toward the egg's. The two cells gradually and gracefully become one.

精子进入了卵子后，它的细胞核就会向卵子的细胞核移动，慢慢结合为一个，而两个细胞也变成一个细胞，这个过程叫做受精。

Once within the egg wall, the sperm's nucleus is drawn toward theegg's. The two cells gradually and gracefully become one.

精子进入了卵子后，它的细胞核就会向卵子的细胞核移动，慢慢结合为一个，而两个细胞也变成一个细胞，这个过程叫做受精。

However, about 20% saw a decline in sperm quality.

然而，约有20 ％的人的精子质量出现了下滑。

She said that the easiest thing to do would be to test your sperm.

她说最简单的方法就是检查你的精子

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。