JJG 440-2008
工频单相相位表检定规程
Verification Regulation of Industry Frequency Singlemphase Phase Meter
2008-12-22
JJG (民航) 031-1996
HP3575A型增益-相位表检定规程(试行)
Verification Regulation of Model HP3575A GAIN-PHASE METER
JJG (民航) 023-1995
PAV-321型宽带相位电压表试行检定规程(试行)
Verification Regulation of Model 321 Wide Band Phase Angle Voltmeter