On this basis,a 'fault start element',a 'fault line select element'and 'fault phase select element'are proposed.
提出了基于小波变换模极大值的电流行波故障启动元件、故障选线元件和故障选相元件。
参考来源 - 行波法故障测距的理论研究及其实现方案·2,447,543篇论文数据，部分数据来源于NoteExpress
In the preliminary design phase of engine, engine configurations must be analyzed and assessed to choose main design parameters and to select optimal engine scheme from multiple candidates.
在发动机初步设计阶段，要根据对发动机的构型方案进行分析与评价，来选择发动机主要设计参数，并从多个发动机方案中选择最佳方案。
Although fault component current phase selector has excellent performance for single transmission lines, it may select unwanted phase for cross-country faults in double-circuit lines on a same tower.
相电流差突变量选相元件在单回线故障中具有良好的选相性能，但在同杆双回线跨线故障中可能误选相。
As another example, the logic state of the select signal can be changed in response to a change in the power supply voltage provided to the phase frequency detector.
作为另一个示例，选择信号的逻辑状态可响应于提供给脉冲频率检测器的电源电压的变化而改变。
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