周维
- 网络Zhou Wei;Chou
周维-
两周前列维求婚，最疯狂的是，萨拉·佩林甚至根本都不知情。
Levi proposed two weeks ago and the craziest part is that Sarah Palin doesn 't even know .
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结果表明，美登木根的次生结构由周皮和维管组织构成；
The secondary structure of the root consisted of periderm and vascular cylinders .
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根的次生结构包括周皮和次生维管组织两部分。
The secondary structure included periderm and secondary vascular tissue .
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结果表明：不同直径大小的横走侧根均由周皮、次生维管组织和四原型的初生木质部构成。
The results showed that all the cross branch roots of different sizes consisted of periderm , secondary vascular tissue and tetrarch primary xylem .