• 地下水位以下真空度测点真空读数无意义。

    Therefore, when vacuum data were measured above groundwater level, the reading of vacuum gauge reflected the wat...

    youdao

  • 地下水位以下真空度测点真空读数无意义。

    Therefore, when vacuum data were measured above groundwater level, the reading of vacuum gauge reflected the wat...

    youdao

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