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子叶
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子叶cotyledon 【医】 cotyledon 相关词组:单子叶植物双子叶的双子叶植物无子叶的子叶zǐyè[cotyledon] 种子植物胚的组成部分之―。植物发育时的第一片叶或者第一对或第一轮叶中之一个。它的功能是使内胚乳中储藏的养料用于幼植物的发育,但有时也充当储藏或光合作用器官
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更新时间:2026/5/16 15:42:05