via hole造句怎么写

The control rod is inserted into the containing via hole from top to bottom, and the lower end of the control rod supports against on the fusible body.

A conductive member contacts the upper electrode on a bottom of the via hole.

The air-in via hole is provided with a lifting post which can seal the air-in via hole;

A via hole is formed through the interlayer insulating film and reaches a position deeper than an upper surface of the upper electrode.