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《双声道回声测试仪检定规程》等 4项规程经批准为国家石油和化学工业局 (石油 )部门计量检定规程 ,其名称、编号如下 :1.ＪＪＧ(石油 ) 10 - 2 0 0 0 双声道回声测试仪检定规程 (代替ＪＪＧ[石油 ]10 - 91)2 .ＪＪＧ(石油 ) 2 0 - 2 0 0 0 石油下井仪表用计时器检定规程 (代
The “Two-Channel Echo Testers Verification Procedures” and other four procedures were approved as the National Petroleum and Chemical Industry Bureau (petroleum) sector measurement verification procedures, the name, code below: 1.JJG (petroleum) 10 - 2 0 0 0 double Channel echo tester verification procedures (instead of JJG [oil] 10 - 91) 2 .JJG (petroleum) 2 0 - 2 0 0 0 meter down instrument calibration procedures