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。
You must test the frequency of ultrasonic everyday when you turn on the machine.
每天开机时，必须检测超音波频率。
Our machine running rate use frequency conversion timing.
全机机速采用变频调速。
Our machine running rate use frequency conversion timing.
全机机速采用变频调速。
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