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

自发荧光强皮层最高，被最低。

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

探讨小切口筋膜内子宫切除在临床中应用价值。

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

本文对密花石斛等六种兰科植显微结构进行了比较观察。