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而对地下水位以下的真空度测点,真空表读数无意义。
Therefore, when vacuum data were measured above groundwater level, the reading of vacuum gauge reflected the wat...
youdao
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而对地下水位以下的真空度测点,真空表读数无意义。
Therefore, when vacuum data were measured above groundwater level, the reading of vacuum gauge reflected the wat...
youdao