大尺寸计量标准
Large dimension metrology standard
三相电能计量标准
the three-phase standard electrical energy
美式线计量标准
avalanche breakdownAmerican Wire Gauge
美国石油协会美国石油学会美国油量计量标准
american petroleum institute
计量标准维护
Measurement standard maintenance
计量标准设备
metrology standard equipment
计量标准器具
measurement standard instrument
光学计量标准器
Optical metrology standard set
估计量的标准误差
standard error of estimate