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释义
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Encyclopedia
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释
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维管植物地上部分的骨干,营养器官之一。
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>生物物理学>RNA分子结构和功能>释义
RNA结构
RNA structure
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RNA二级结构
RNA secondary structure
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茎区
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①杆,柄 ②芯柱
Mathematics
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干,茎
Biology
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茎;主干
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