nucellus怎么读，nucellus的音标和真人发音
英音
[nu:'seləs]
美音 [nu:'seləs]
nucellus是什么意思，nucellus的意思是
n.珠心
nucellus 变化形式
复数： nucelli
nucellus 的用法和双语例句“点击”或“选中”例句中的单词，就可以看到词义解释
- The pollen grains of yew tree are directly fallen on the micropyle by wind and enter pollen chamber at the top of nucellus through pollination drops , a sugary exudation rich in nutritious materials at the micropyle .
- 红豆杉的花粉，一般借助风力直接传播到珠孔端的传粉滴上。传粉滴是珠心组织的周期性分泌产物，它富含糖和氨基酸等营养物质。
- 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 cells of the integument and nucellus of some plants form perfectly normal embryos .
- 某些植物的珠被和珠心细胞形成完全正常的胚。
- 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。
- In the second year , the resting pollen tube revives its activity in the nucellus towards the march . The two unequal male gamete formed in the april .
- 第二年三月，休眠的花粉管在珠心内恢复活动，四月形成二个不等的雄配子。
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