分析表明，线路末端三相故障时，线路首端的测量阻抗不与故障距离成正比。
The analysis shows that the measured impedance at the head of the line is not proportional to the fault distance when a three-phase fault occurs at the end of the line.
相应地，它的测量电路采用具有三个输入端的变压器电桥，从而免除了电极边缘和外界干扰的影响。
A transformer-ratio arm bridge with three terminals is adopted as its measuring circuit to eliminate the influence of electrode edges and exterior interference.
浮法玻璃生产线玻璃带厚度在线检测技术采用了激光三角法位移测量原理，在退火窑热端进行玻璃带测厚的方案。
Adopt laser trigonometry displacement measure theory in the detection of glass thickness on line and the method in the hot side of annealing kiln.
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