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polar nucleus
释义
polar nucleus
n.
Botany
(名词)【植物学】
Either of two nuclei located centrally in a flowering plant embryo sac that eventually fuse to form the endosperm nucleus.
极核:位于一株开花植物的胚囊中央的两个细胞核的任一个,这两个细胞核最终融合而形成内胚乳细胞核
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更新时间:2024/12/23 11:31:59