vascular transition的意思|示意

The root-stem transition region and the root in the elder plant reproduce the abnormal secondary structure which is similar to the rode caused by separation of the vascular bundle.

在多年生植株根茎过渡区出现的“绳索状”异常结构则是由于其内部维管束裂分的结果。

Study of the Transition from Procambium to Vascular cambium in Erythrina Arborescens Roxb.

原形成层向维管形成层转化的研究。