velamen

Objective To discuss the application of small incision used in uterectomy under velamen.

探讨小膜内子宫除术在临床中的应用价值。

The exodermis cell wall possesses the highest auto-fluorescent intensity whereas that of velamen the lowest.

自发荧光强度以外皮层的最高，根被的最低。

The observation on the microstructure of six orchids demonstrated that they have the typical orchidaceous roots with velamen and thick cortical tissue.

本文对花石斛等六种兰科植物根的显微结构进行了比较观察。