片语
flow meter calibration number流量表标定号码
meter calibration adjuster仪表检定调节器
Water Meter Calibration水表检定
meter ampere calibration仪表标定
pH meter calibration kit酸度计校準试剂盒
master meter calibration unit标準流量计标定装置
current-meter calibration流速仪检定
meter calibration check收费表準确性检验
vpm meter calibration每分钟振动次数表标定