The rigid cover plate is provided with two grout holes.

刚性盖板设置两个灌浆孔。

Reattach cover plate to make an air and water tight seal.

重新固定盖板，并紧密密封防止空气和水通过。

The handle of cover plate is adopted as retractable handle.

盖板把手改为可折叠式。

The injection mould for a duplicator cover plate is designed.

设计了复印机盖板的注塑模具。

Remove all nuts and bolts from cover plate and take off plate.

从盖板上拆卸所有螺母和螺栓，然后将盖板拿开。