periderm
n. [植] 周皮
例句
The pericycle produces the latent roots and periderm.
由中柱鞘产生侧根及周皮。
It had secondary structure and the secondary protective tissue was periderm.
具有次生结构，次生保护组织为周皮。
The harmful effect of injecting chemical into tree on the xylem, bast, periderm and tree body was studied.
本文就树干注入农药，对木质部、韧皮部及周皮和整个树体是否产生不良影响做出评价。
