先将氧气橡皮管紧接在氧气接头上，使焊炬接通氧气。

First connect the oxygen latex duct with the oxygen joint so that the welding torch can be supplied with oxygen.

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先将氧气橡皮管紧接在氧气接头上，使焊炬接通氧气。

First connect the oxygen latex duct with the oxygen joint so that the welding torch can be supplied with oxygen.

youdao