• 级压缩复式热泵系统突出特点就是中冷器。

    The most important part of the system of TCCH is intercooler.

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  • 本文论述了齿轮卷绕机构工作原理

    The working principle of two gear anti-patterning mechanism is described.

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  • 本文论述了齿轮卷绕机构工作原理

    The working principle of two gear anti-patterning mechanism is described.

    youdao

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