备用控制面板。它的按钮、显示灯和操作杆都更少，但同样能够进行主要的操作。

The reserve control panel. It has fewer buttons, lights and levers, but it is still able to make the main operations.

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备用密封件是阀帽(12)内主阀杆密封组件(20)的二级密封。

The backup seal is secondary to the main stem seal assembly (20) in the bonnet (12).

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我还曾用在甲板盖和橡胶插头下的主杆上，备用轮胎上，最近我用它从内部来处理了侧板锈。

I also have used it in the deck lid and the trunk under rubber plugs, in the spare tire well, and to treat recent quarter panel rust repair from the inside.

youdao

我还曾用在甲板盖和橡胶插头下的主杆上，备用轮胎上，最近我用它从内部来处理了侧板锈。

I also have used it in the deck lid and the trunk under rubber plugs, in the spare tire well, and to treat recent quarter panel rust repair from the inside.

youdao