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变频器调速原理和用途 - gongkongftp.gongkong.com/UploadFile/datum/2009-4/... · 2009. 4. 30. · 变频器调速原理和用途 变频器是在保证电机原有性能的情况下,通过改变电机的供电频率和电压的方式,实现电机
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