| 单词 | medullary ray |
| 释义 | medullary ray (once / 123118 pages) n WORD FAMILY medullary ray: medullary rays USAGE EXAMPLESPeridermium, the hyphae of which invade the medullary rays and resin canals and thus open the way to an outflow through cracks in the bark. Ward, H. Marshall, Disease in Plants(2012) It is also traversed by medullary rays, Mr, which are continuations of those in the wood. Various, Scientific American Supplement, No....(2011) When tracheids occur in the medullary rays of the xylem these are replaced in the phloem-region by irregular parenchymatous cells known as albuminous cells. Various, Encyclopaedia Britannica, 11th Edit...(2011) n a sheet of vascular tissue separating the vascular bundles Syn|Hyper vascular ray vascular tissue tissue that conducts water and nutrients through the plant body in higher plants |
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