primary xylem

primary xylem 基本解释

[医] 初生木质部

primary xylem 用法和例句

1、The Casparian strip is not obvious in the endodermis. It has actinostele, and primary xylem is diarch. The secondary structure of root of A. trifoliata includes periderm and secondary vascular tissue from the outer to the inner.

内皮层有凯氏带, 星状中柱, 初生根二原型。

重点词汇

primary adj. 首要的，主要的；最早的，原始的；[地质学]原生的；基本的 n. 第一位；最好者；要素；候选人提拔会

xylem n. 木质部 [医] 木质部(植物纤维束的)