The theoretic analysis is accomplished on the circuit topology, principle, harmonic detecting method, control method and circuit designing of Parallel Hybrid Active Power Filter (PHAPF).
其次，文章重点对电容注入方式的并联混合型有源电力滤波器的电路结构、工作原理、谐波检测方法、控制方式、电路设计进行了理论分析。
Based on the concepts of reciprocal screws and their linear correlativity, a detecting method of input interference in a spatial parallel manipulator is presented.
提出一种基于螺旋系线性相关性和约束反螺旋概念的空间并联机器人输入原动件选取合理性的判别方法。
It probes and summarizes the use of this device with multiple real world pipeline detecting examples like the close distance parallel pipelines, multi - cable pipelines, and nonmetal pipelines.
结合RD 4000管线探测仪在实际工作中常遇到的近间距并行管线、多电缆管道、非金属管线等探测难题，进行探讨和总结。
It probes and summarizes the use of this device with multiple real world pipeline detecting examples like the close distance parallel pipelines, multi - cable pipelines, and nonmetal pipelines.
结合RD 4000管线探测仪在实际工作中常遇到的近间距并行管线、多电缆管道、非金属管线等探测难题，进行探讨和总结。
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