A new mathematic model of synchronous machines for simulating the motor semi synchronous starting is derived in detail in this paper.
本文根据同步电机的基本方程，详细推导了同步电机半同步起动的双机耦合模型。
Performance Requirements of Lighting and Light-Signalling Devices for Motor vehicle having more than Three-Wheels, Trailer, Semi-Trailer.
性能要求的照明及光信号装置的机动车有四分之三以上的车轮，拖车，半拖车。
Performance Requirements of Lighting and Light-Signalling Devices for Motor vehicle having more than Three-Wheels, Trailer, Semi-Trailer.
性能要求的照明及光信号装置的机动车有四分之三以上的车轮，拖车，半拖车。
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