The highspeed overnight sleeper trains running on the Beijing-Shanghai line start from Shanghai after 9 pm and arrive in Beijing after 7 am.
张先生说，京沪动卧每晚9点多发车，第二天早上7点多抵达北京。
The magnetic structure and starting process of the line-start permanent magnet synchronous motor are relatively complicated.
三相异步起动永磁同步电动机的磁路结构和起动过程都比较复杂。
Three-phase unbalanced voltages have great effects on the performance of a line-start permanent magnet synchronous motor.
三相电压不对称对永磁同步电动机的性能影响较大。
Three-phase unbalanced voltages have great effects on the performance of a line-start permanent magnet synchronous motor.
三相电压不对称对永磁同步电动机的性能影响较大。
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