Warning: file_put_contents(/www/wwwroot/ppbbu/cp667.com/cache/6f83b3258e5bdb52c638de60a87e8399.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/cp667.com/index.php on line 55 rotary ultrasonic drilling是什么意思，rotary ultrasonic drilling的翻译，rotary ultrasonic drilling音标、读音、用法和例句_淳朴汉英词典
A portable and rotary type ultrasonic drilling machine is developed and designed for drilling of carbon fibre composition components. 爲碳纖維複郃材料搆件的鑽孔，研制出一種便攜式鏇轉超聲鑽。