cambium造句
The base of scoin is cut diagonally to expose a large oval of
cambium.
接穗的基部被切成斜形,暴露出椭圆形的大圈形成层.
The callus originated from several parts , but mainly from
cambium.
愈伤组织是多起源的, 但主要源于形成层.
A tissue produced inwardly by the cork
cambium.
栓内层在内部由软木新生层产生的组织.