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单词
pollen tube
释义
pollen tube
n.
(名词)
The slender tube formed by the pollen grain that penetrates an ovule and releases the male gametes.
花粉管:由穿透胚珠并释放出雄性配子的花粉粒形成的细管
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更新时间:2026/4/14 4:15:57