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单词
medullary sheath
释义
WordReference Random House Unabridged Dictionary of American English © 2024
med
′
ullary sheath
′
,
Botany
a narrow zone made up of the innermost layer of woody tissue immediately surrounding the pith in plants.
Anatomy
See
myelin sheath.
1840–50
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更新时间:2025/7/31 1:59:10