The article refers to the oil pipe two - dimension leak - magneticdetector firstly.
本文首先给出石油专用管二维漏磁高速探伤机的工作原理。
2
The open loop characteristic of the double detector is calculated in theory and the double magneticdetector comparator is constructed for testing and performance evaluation.
文中对这种双重磁检测器的开环特性进行了理论计算和试验测试。
3
Shuttle Endeavour is set to launch April 19 with the $2 billion Alpha Magnetic Spectrometer particle detector.