... symmetrical intensity distribution 对称光强分布 symmetrical motor 对称电动机 symmetrical polyphase circuit 对称多相电路 ...
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As one of the connections for three phase induction motor to operate from single phase supply, SEMIHEX connection can enable three phase induction motor have approximated symmetrical operation.
作为三相感应电动机单相运行的一种特殊接法，SEMIHEX连接可使三相感应电动机在单相电源上接近对称运行。
The feasibility and necessity of economic reasonable operation of symmetrical reciprocating double motor drive lifter are expounded, and analyzed with actual example.
阐述了对称往复式双机拖动提升机经济合理运行的可行性和必要性，并进行了实例分析。
The SPWM algorithm using symmetrical sample in this controller, can alter its frequency and amplitude. The good performance of the BLDC Motor controller using DSP is verified by the experiment.
本文在分析了几种SPWM调制方法的基础上，将基于对称采样法的SPWM调制算法应用于本设计中，产生了可调频调幅的正弦波脉宽调制信号。
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