主阀主要由阀座、主阀盘、活塞、弹簧等零件组成。

Mainly by the main valve seat, the main valve plate, piston, springs and other parts.

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如果你能在邻居家打电话，叫煤气公司关掉外面的煤气主阀盘。

Turn off the gas at the outside main valve if you can and call the gas company from a neighbor's home.

youdao

如果你能在邻居家打电话，叫煤气公司关掉外面的煤气主阀盘。

Turn off the gas at the outside main valve if you can and call the gas company from a neighbor's home.

youdao