更换和校验压力表。
二是装置经过校验的压力表,以便核对工作压力表的准确度。
Second, device after calibration of pressure gauge, to check the accuracy of the work pressure gauge.
新型高压电能表必须采用整体误差校验系统来定义准确度等级。
The accuracy grade of novel HVEM must be defined by integrated error calibration system.
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