单词:pollen sac
pollen sac的用法和样例:
例句
- The pollen is released when the lobes split open longitudinally.当花粉成熟时,药隔每侧的两个花粉囊相互连通。
- Each lobe contains two pollen sacs that produce very large quantities of small pollen grains.左右两侧花粉囊之间是薄壁细胞构成的药隔,药隔中的维管束与花丝维管束相连。
单词:pollen sac 相关文章
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