internal phloem

内生韧皮部（internal phloem）：位于初生木质部里面的初生韧皮部。分隔纤维（septate fiber）：具有薄横壁（隔膜）的纤维…

丝锁气压计_馆档网 ... "内燃机"," Internal combustion engine" "材内筛部"," Internal phloem" "内部应力"," Internal stress" ...