英语词汇“histogen theory”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	histogen theory
释义	histogen theory noun : a theory in botany: a growing point (as of a stem or root) consists of three histogens each of which gives rise to a different tissue — see dermatogen, periblem, plerome
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