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单词
vascular ray
释义
WordReference Random House Unabridged Dictionary of American English © 2024
vas
′
cular ray
′
,
[
Bot.
]
Botany
a radiate band of parenchyma in the secondary xylem extending into the secondary phloem of the stems of certain vascular plants, formed by the cambium and serving for the storage of food and the conduction of nutriments.
1665–75
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更新时间:2025/9/21 17:54:14