[医] 次生木质部

secondary xylem的用法和样例：

例句

In nonwoody plants the primary xylem is the only water-conducting tissue, but in mature plants with secondary growth this function is mostly taken over by the secondary xylem.在尚未木质化的植物中，初生木质部是唯一的输水组织，但在具有次生生长的成熟植物中，该功能大多由次生木质部行使。

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牛津初中英语一年级

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发表于:2019-01-03 / 阅读(60) / 评论(0)

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发表于:2019-01-03 / 阅读(59) / 评论(0)

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Greg Chalmers wins Australian Open, Woods finishes third

CANBERRA, Nov. 13 (Xinhua) -- Australia's Greg Chalmers on Sunday claimed his second Australian Open crown with a one-stroke victory at The Lakes in Sydney. A controlled final round of three-under par 69 meant the left-hander Chalmers finished on a 1

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