faster welding 中文意思是什麼
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Method 2 : ultrasonic cleaning, pcb member of ultrasonic welding face lotion under the surface ( water temperature 40 - 60 c ) cleaning faster, better results
方法2 ：超聲清洗，將pcb板焊接面置於超聲水清洗液表面（水溫40 ~ 60 ）清洗，速度更快，效果更佳。
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