加工孔我有一个放电室，与一个大洞顶部。

Machined hole I have a discharge chamber with a hole in the top.

youdao

水滴下时，便挥发掉，溶解的物质残留在洞顶上。

As it drips, the water evaporates, and the dissolved matter is left on the ceiling.

youdao

水滴下时，便挥发掉，溶解的物质残留在洞顶上。

As it drips, the water evaporates, and the dissolved matter is left on the ceiling.

youdao