The haploid nucleus of a sperm or egg before fusion of the nuclei in fertilization .

原核授精的核聚变之前的精子或卵子的单倍体核

属类：综合句库--

In mammals, sperm are produced in the testes and travel through the reproductive system. At fertilization , one sperm of the roughly 300 million in an average ejaculation (see semen)fertilizes an egg (see ovary)to produce an offspring.

在哺乳动物中,精子由睪丸产生,经生殖系统传送。受精时,每次射精平均约有三亿个精子中的其中一个与卵结合产生下一代。

属类：化学及生命科学-医学-生理与解剖

They damage female strobili during the interval between pollination and fertilization

在传粉与受精的间隔期间,他们毁坏了雌球花。

属类：综合句库--

" Any of various physical phenomena in which some quantity is constantly undergoing small, random fluctuations. It was named for Robert Brown, who was investigating the fertilization process of flowers in 1827 when he noticed a "rapid oscillatory motion" of pollen grains suspended in water."

在各种物理现象中,一些量恒常所作的小而随机的涨落,以最早研究这种涨落(1827)的布朗命名。布朗记述了他注意到花粉内有微粒运动,他将无机和有机物质粉末悬浮在水中试验时,发现悬浮微粒的"快速振动运动。

属类：自然科学-物理-

Self-pollination, and subsequently self-fertilization , in orchards always takes place to some extent

在果园中,常常有某种程度的自花传粉和随后地自花授精。

属类：综合句库--

The Fertilization and Proembryo Choose of Pinus sylvestris var. mongolica

樟子松受精作用和原胚的选择

属类：行业术语-中文论文标题-

Farmers in China have long used techniques such as fertilization and irrigation to make their land produce more.

中国的农民一直没用诸如施肥和灌溉等手段来提高土地产量。

属类：学习英语-教材英语-高一课文

fertilizers and fertilization in ancient China

中国古代肥料和施肥

属类：综合句库--

Intrauterine devices (IUDs)are placed inside the uterus and appear to cause a mild endometrial inflammation that either inhibits fertilization or prevents a fertilized egg from implanting.

子宫内避孕器是植入子宫内的塑料或金属器械,引起子宫内膜发生轻度炎症,从而抑制了排卵,防止了受精,或防止了受精卵着床。

属类：化学及生命科学-医学-

Autogamy:Self-fertilization in plants.

自体受精:植物的自身受精。

属类：综合句库-未分类-