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送气管线的一头与供气系统连接;
One end of the gas supply pipeline is connected with the gas supply system;
youdao
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如果煤气管漏气,你必须关闭送气管,否则很危险。
If the gas blows back you must turn off the supply, as it is dangerous.
youdao
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如果煤气管漏气,你必须关闭送气管,否则很危险。
If the gas blows back you must turn off the supply, as it is dangerous.
youdao