校正试验 meaning in Chinese

calibration test

Cylindrical reference test bar
筒形校正试验杆
Specification for radio disturbance and immunity measuring apparatus and methods - part 1 - 5 : radio disturbance and immunity measuring apparatus - antenna calibration test sites for 30 mhz to 1 000 mhz
无线电干扰和抗扰的测量设备和方法的规范.第1 - 5部分:无线电干扰和抗扰的测量设备. 30 mhz至1 000 mhz的天线校正试验装置