The vascular cambium extends to form a complete ring of meristematic tissue around the stem, the separate vascular bundles being linked by interfascicular cambium.
维管形成层向两侧延伸直至形成一个茎内的分生组织环，各个维管束被束间形成层联系在一起。
3
It is demonstrated that the composition of alloy, type of carrier, and large ring coordinate compounds are directly linked to activity and stability of anode catalysts.