“形成层”造句

接穗的基部被切成斜形,暴露出椭圆形的大圈形成层.
The base of scoin is cut diagonally to expose a large oval of cambium.

原形成层和基本分生组织的细胞比原表皮层细胞更加液泡化.
Cells of the procambium and ground meristem are more vacuolated than those of the protoderm.

中柱包括从原形成层衍生而来的全部初生组织,由中柱鞘 、 韧质部和木质部组成.
The stele includes all primary tissues derived from the procambium consists of pericycle, phloem and xylem.

• #形成层