concentric included phloem的意思|示意
美 / /
英 / /
同心包括韧皮部
concentric included phloem的网络常见释义
同心式的内含韧皮部 ... concentrated loading 集中荷载 concentric included phloem 同心式的内含韧皮部 concrete foundation 混泥土基础 ...