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无超声波：检查超生波发生器功率内的元件是否损坏，换能器是否短路。
No Ultrasonic: Check whether generator components are damaged, or the transducer short circuit.
youdao
-
无超声波：检查超生波发生器功率内的元件是否损坏，换能器是否短路。
No Ultrasonic: Check whether generator components are damaged, or the transducer short circuit.
youdao