double fertilization是什么意思

网络释义

用法例句

Observation on the double fertilization in rice by using confocal microscopy;

水稻双受精过程的共聚焦显微镜观察

A study was conducted on development of embryo sac,pollen tube growth and double fertilization process in oriental lily Sorbonne and Acapulca,using the method of paraffin section and fluorescent microscope,to find the suitable period of pollination and embryo rescue.

以东方百合索蚌(Sorbonne)和元帅(Acapulca)为试材,采用石蜡切片法和荧光显微技术研究其胚囊发育,观察花粉管生长和双受精过程,研究适合百合的授粉及进行胚抢救的时期。

The comparison of the process of double fertilization between the diploid rice APIV (2) and the autotetraploid rice APIV (4) was conducted.

通过镜检对二倍体水稻APIV( 2 ) 和同源四倍体水稻APIV( 4 ) 的双受精过程进行了对比观察 ,结果表明 ,与二倍体水稻相比 ,同源四倍体水稻的双受精过程比较特殊 ,花粉粒在其柱头上萌发比较慢 ,花粉管在花柱内的伸长比较迟缓 ,双受精延迟 ,退化型胚囊的频率比较高 (36 。

Today, the relationship between principal and agent is more complex, and the double－ entrusted responsibility is heavier than before.

双重受托责任会计是责任会计的新发展，在当前委托──代理关系日趋复杂、双重受托责任日益繁重的情况下，研究双重受托责任会计具有十分重要的现实意义。

Effects of CPPU on Double-fertilization and Fruit-set in Melon(Cucumis Melom L);

CPPU对甜瓜双受精和坐瓜的影响

Role of Calcium during Double Fertilization in Torenia Fournieri;

钙在蓝猪耳双受精过程中作用的研究

THE ROLE OF Ca ~（2+） AND CaM IN THE DOUBLE FERTILIZATION OF ANGIOSPERMS;

Ca~(2+)和CaM在被子植物双受精中的作用

In Vitro Double Fertilization in Angiosperms: Gamete Fusion and Early Developmental Events in Fertilizated Eggs

被子植物体外双受精：配子融合与受精卵早期发育事态

Multimedia Teaching Design of ″Angiosperm Double Fertilization in Biology Teaching″;

浅谈“被子植物双受精”的多媒体教学设计

Cytological observation on double fertilization of autotetraploid rice;

同源四倍体水稻双受精过程的细胞学观察

Cytological Observation of Double Fertilization and Its Duration in Oryza sativa

水稻双受精过程的细胞形态学及时间进程的观察

The pollen grain germinates on a special extension of the carpel, the stigma, and double fertilization results in a diploid zygote and triploid (usually) endosperm nucleus.

花粉粒在柱头上萌发，双受精导致双倍体的合子和三倍体的胚乳形成。

(of twins) derived from two separate fertilized ova.

（指双胞胎）源于两个分开的受精卵。

fraternal twins are biovular.

二卵双胞胎是源于两个分开的受精卵的。

Monozygotic twins, on the other hand, arise from the same fertilized egg.

同卵双生子则是由同一个受精卵发育而成的。

OVERVIEW: Gemini thrives on change, variety and mental stimulation.

整体运势：2007年双子座精力旺盛，变化很大，精神也很受鼓舞。

"After fertilization, the zygote may enter a resting phase for several weeks before developing into a new plant."

精子双鞭毛,卵子受精后,经过为期数周的休眠期后萌发。

Dizygotic twins arise from two separate eggs fertilized by two spermatozoa.

异卵双生子是由两个精子与两个不同的卵受精而成长起来的。

Derived from two separately fertilized eggs. Used especially of fraternal twins.

两合子的，两受精卵的源自两个分别受精的卵子的，尤用于指异卵双胞胎

And now, when the English spirit stand at its full height to do so would be a double loss.

而在今天当英国精神极为高涨的时候，这样做更会受到双重损失。

Identical twins form when a single fertilized egg in the mother's body divides into two embryos.

当母体内的受精卵分裂成两个胚胎时，就形成了同卵双胞胎。

These boots hurt his feet dreadfully and made him feel very tired and miserable.

这双靴子使他的脚受苦不浅，弄得他精疲力竭，非常痛苦。