1)reference ga[u]ge,校對測規，校對量規校對計2)reference gauge,校對測規3)reference gage,校對量規4)standard of proofreading,校對規范5)master ring gauge,校對環規6)reference device,校對規
用法和例句
Based on the analysis of measuring principle of pneumatic gauge head,a high-precision pneumatic gauge head for taper measurement and its reference device are designed.
