精选优质文档- 倾情为你奉上专心-专注-专业机电专业英语翻译（2）11、A car engine started from cold takes time to warm up and to reach its correct operating temperature. The quicker it reaches that temperature the sooner it begins operating at its most efficient.冷起动汽车发动机从预热到合适的工作温度很费时间，越快达到这个温度，发动机就越早开始最有效地运行。12、Each type of motor has its particular field of usefulness. Because of its simplicity, economy, and durability, the induction motor is more widely used for industrial purposes than other type of ac motor, especially if a
