Disconnect the hose from the bottom cover plate to the relief valve.

斷開底部蓋板到安全閥上的軟管.

The Manufacturing of the Bottom Cover

底遮板的加工

The key of the problems is to design the seals and the speeding mechanism of the bottom cover of the reactor reasonably.

解決問題的關鍵在于密封和高分子聚丙烯酰胺反應器底蓋快速開啟機構的合理設計。

Bottom cover powder coated steel plate.

上下罩：鋼板烤漆壓筋。

The Design Principle of Empty Jar Bottom Cover Counting Number Machine

空罐底蓋計數機設計原理

Cement the fuselage bottom cover and wing together as shown in the diagram.

再將機身下罩按圖示粘接在機翼上.