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单词 pith ray
释义

pith ray


pith ray

n. The parenchymatous tissue that extends between the vascular bundles of a stem or root.

pith ray


pith ray

[′pith ‚rā] (botany) medullary ray

medullary ray, pith ray

medullary rays In a cross section of a tree or log, one of the ribbons of tissue extending radially from the pith; may vary from microscopic to 4 in. (10 cm) or more in oak; used to store and transport food horizontally within the tree.
MedicalSeemedullary ray
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