介绍了气体微流量标准装置对漏率的校准方法。
The calibration method of leakage rate with the gas low range standard apparatus is introduced.
定义电子称的校准步骤，校准标准及校准周期。
To define the procedure, standard and interval for Calibration of Electronic balance.
定义电子称的校准步骤，校准标准及校准周期。
To define the procedure, standard and interval for Calibration of Electronic balance.
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