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This paper is practical for frequency converter design and application.
本文对于变频器的设计与应用，具有一定的现实指导意义。
youdao
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The radio frequency machine is more and more extensive in the clinical application.
射频机在临床应用越来越广泛。
youdao
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The radio frequency machine is more and more extensive in the clinical application.
射频机在临床应用越来越广泛。
youdao