英语词汇“root sheath”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	root sheath
释义	root sheath noun 1. a. : a many-layered epidermal sheath surrounding an aerial root (as the velamen in an epiphytic orchid) b. : coleorhiza 2. : the epidermal lining of a hair follicle comprising two principal layers of cells that make up an inner and an outer root sheath
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