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。
Through theoretic analysis and computer simulation, the seismic vibration control of huge subway platforms with upper structures is discussed in this paper.
本文通过理论分析和数值模拟，对设有减震层的地铁车辆段大平台结构—上部住宅减震系统进行了研究。
Based on theoretic study and empiric analysis, this paper has given a deep research on the inventory control within automobile enterprises.
本文以理论研究与实证分析相结合的方式，对汽车企业库存控制展开了深入的探讨。
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