• If the exhaust system is under a vacuum, the casing must be warmed by gradually introducing the steam, after opening the exhaust valve.

    如果排气系统处于真空下必须打开排气阀逐渐蒸汽加热壳体

    youdao

  • If the exhaust system is under a vacuum, the casing must be warmed by gradually introducing the steam, after opening the exhaust valve.

    如果排气系统处于真空下必须打开排气阀逐渐蒸汽加热壳体

    youdao

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