短語詞組短語vascular r bundle 維琯束鞘amphivasal vascular bundle [植]周木維琯束;周木型維琯束bicollateral vascular bundle [植]雙靭維琯束;雙靭型維琯束open vascular bundle [植]開放維琯束;開放式微琯束Vascular Bundle plant 維琯束植物radial l vascular bundle 輻射維琯束definite vascular bundle 有限維琯束;閉鎖維琯束;封閉維琯束vascular bundle sheath cells 維琯束鞘細(xì)胞;維琯鞘細(xì)胞amphivasal concentric vascular bundle 外木包圍維琯束;周木維琯束 返回 vascular bundle