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利用自制的调节器，通过异步电动机和并励直流发电机同轴机组稳定直流电压的实验阐明了异步电动机无级自动调速的全过程
The use of self-made regulator, through the asynchronous motor and shunt DC generator to stabilize the DC voltage of the experiment illustrates the asynchronous motor stepless automatic speed control of the entire process