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phloem
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理学
〔植物形态与结构〕
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phloem
韧皮部
维管植物(蕨类植物、裸子植物和被子植物)体内输导养分,并具有支持、贮藏等功能的复合组织。与木质部共同构成植物体内连续的维管系统。
Biology
phloem
韧皮部
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