受精时 meaning in Chinese
the time of fertilization
Examples
- When the male reproductive cell fertilizes the female reproductive cell a zygote is formed .
当男性生殖细胞与女性生殖细胞发生受精时，就形成了一个合子。 - Conception occurs when a sperm fertilizes the egg
当精子使卵子受精时便产生受孕。 - Pumpkins get their start when bees fertilize their flowers
当蜜蜂是南瓜花受精时他们的生命才得以开始。 - No pumpkins will grow if the female flower is not pollinated at the right time
如果雌花没有在恰当的时候受精时不能长成南瓜的。 - Enclosure of the nucellus by the integuments is incomplete , the embryo sac or , in gymnosperms , to the archegonium
珠被并不是将珠心完全封闭，而是留有珠孔以便受精时花粉管进入胚囊，或裸子植物的藏卵器。