zero passage meaning in English

过零
零通道

Algorithms concerning phase difference measurement , viz , the zero passage method and the relevant function method are brought forward
摘要针对相位差检测的过零法和相关分析法，阐述了算法的检测原理，讨论了影响相位差检测精度和快速性的因素。
Judgment of the point of zero passage is the key factor involved , and a higher sampling frequency should be adopted when the method is applied on situations of large signal amplitude
其中过零点判定为关键技术，当用于信号幅值较大场合时应尽量提高信号采样频率。