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单词 protophloem
释义

protophloem

noun

pro·​to·​phlo·​em ˌprō-tə-ˈflō-ˌem How to pronounce protophloem (audio)
: the first-formed phloem that develops from procambium, consists of narrow thin-walled cells, and is usually associated with a region of rapid growth

Word History

First Known Use

1884, in the meaning defined above

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更新时间:2024/12/23 20:11:22