音标与读法

这里为大家介绍下protoxylem 是什么意思，希望能帮助到各位朋友。

中英文翻译

n.

【植物；植物学】原生木质部。

例句与用法

1.It consists of the protoxylem ( formed first ) and metaxylem

包括原生木质部（最早形成的）和后生木质部。

2.Protoxylem the primary xylem elements that are formed from the procambium first

原生木质部：初生木质部的成分，最早由原形成层形成。

3.Annular thickening rings of thickening laid down on the inner wall of protoxylem vessels and tracheids

环状加厚：原生木质部导管和管胞的内层环状?厚。

4.In seed plants the protoxylem occurs at the innermost edge of the vascular bundles in stems , but external to the later - formed xylem in roots

在种子植物中，原生木质部发生在茎的维管束的最内方，但在根中，位于后生木质部的外方。

5.4 . the studies focused on the cnz of dianthus barbatus and saponaria offlcinalis seedlings applied two different vascular cylinder types , even through they both were " " - shape exarch and diarch haplostele , their patterns of protoxylem and m

此外，在商陆科的美洲商陆的子叶节区下部发现了一种具有双大括号状( “ { } ” )的维管柱类型。

单词网DAncI.583316.cOM