sheathing

The result shows that inspecting cabtyre sheathing by ultrasonic is feasible, and the immersion method would be the most reasonable one.

提用水浸法及聚焦头是比较合理的法，同时为超声波应用于硬质橡胶材料的质量检测提供一定的依据。

Leaves in a rosette, grasslike, linear, occasionally thinly filiform, often thin and transparent, fenestrate, base sheathing.

叶莲座丛生，禾草状，线形，偶尔薄丝状，通常薄而透明，，基部具鞘。

Other findings may include vitreous cell, a granularity of the fovea, retinal vascular sheathing, early hyperfluorescence of the white dots with some late staining.

萤光摄影检查可见在白点处有早期过萤光和晚期萤光染色现象。