| 释义 |
tube nucleus tju:bˈnju:kliəs
基本例句
粉管核
Thetube nucleusdisintegrates as the pollen tube penetrates the nucellus.另外的粉管核会在花粉管穿过珠心时发生分裂。
The two sperm nuclei and thetube nucleusare all derived from a single microspore nucleus by mitosis.两个精核和管核都是从同一个小孢子核有丝分裂产生的。 |