| 释义 |
nu·cel·lus 英nuː'seləs美nuː'seləs
基本英英例句
n.植珠心形容词nucellar名词复数nucelli
Noun:
central part of a plant ovule; contains the embryo sac
名词100%
用作名词The nucellus is usually degraded and absorbed as the endosperm develops.珠心通常在胚乳发育时被分解和吸收。
The region of an ovule that is opposite the micropyle,where the integuments and nucellus are joined.合点珠孔对面的胚珠内结合珠被和珠心的一个区域。 |