secondary medullary ray
常見例句
- It is a lateral meristem and contains fusiform initials giving rise to secondary xylem and phloem and ray initials giving rise to medullary rays. See also secondary growth.
維管形成層屬于側(cè)生分生組織，包括能夠產(chǎn)生次生木質(zhì)部與次生韌皮部的紡錘狀形成層原始細(xì)胞和產(chǎn)生髓射線的射線原始細(xì)胞。
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