词汇	trunk line circuit
释义	trunk line circuit 长途线路
随便看	calibrated instrument calibrated instrumentation calibrated instrument lead calibrated interference measurement calibrated lead calibrated leak calibrated loop calibrated magnification calibrated manometer calibrated manometre calibrated mass calibrated measuring tank calibrated meter calibrated microphone calibrated microscope calibrated mount calibrated neutron flux power calibrated noise generator calibrated orifice calibrated oscillator calibrated oscilloscope calibrated pattern calibrated phase shifter calibrated phonocardiography calibrated pipet