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The dynamic flow method UHV standard apparatus is an absolute vacuum standard for vacuum gauge calibration.
动态流量法超高真空标准装置是用于校准真空规的绝对真空计量标准。
youdao
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The dynamic flow method UHV standard apparatus is an absolute vacuum standard for vacuum gauge calibration.
动态流量法超高真空标准装置是用于校准真空规的绝对真空计量标准。
youdao