vascular cylinder
常见例句
- The central cylinder in which the primary vascular tissue is arranged around a pith, as in most seed plants.
一种管状中柱，其中初生脉管组织排列在髓孔周围，存在于大多数种子植物中。 - The thickened tap root appeared to consist of 2 or 3 rings of anomalous vascular bundles surrounding the central cylinder which might be an important adaption to dry condition.
主根粗壮，其中柱周围产生2或3轮呈同心环状排列的异常维管束。 这种异常结构对旱生植物具有重要的生态学意义。 返回 vascular cylinder