vascular ring 中文意思是什麼
vascular ring
解釋
血管環-
The vascular cambium extends to form a complete ring of meristematic tissue around the stem, the separate vascular bundles being linked by interfascicular cambium
維管形成層向兩側延伸直至形成一個莖內的分生組織環，各個維管束被束間形成層聯系在一起。 -
The stems and rhizomes were observed to differ in cortex - cell layer, perivascular fiber - ring presence, vascular cylinder and pith proportions, vascular bundle number and secondary growth and these differences were associated with their own physiological functions
地上莖和根狀莖之間在皮層細胞層數、周維纖維柱的有無、維管柱和髓所佔比例、維管束束數、次生生長等方面存在差異，這些差異與它們各自擔負的生理功能相關聯。 -
It stretches from the leaf base to the vascular ring in the stem axis
它由葉子基部的維管束延伸至莖軸的維管束。 -
Bundle sheath the ring of parenchymatous or sclerenchymatous tissue, usually one cell thick, that surrounds the vascular bundle in an angiosperm leaf
維管束鞘：在被子植物葉中，圍繞維管束的通常是一層薄壁或厚壁細胞。
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