Warning: file_put_contents(/www/wwwroot/ppbbu/28094.com/cache/32dad5effaeaa9bcb1888a417c484c40.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/28094.com/index.php on line 55 ultrasonic drilling machine例句_ultrasonic drilling machine英汉例句_ultrasonic drilling machine双解例句_贰靶汉英词典
A portable and rotary type ultrasonic drilling machine is developed and designed for drilling of carbon fibre composition components. 为碳纤维复合材料构件的钻孔，研制出一种便携式旋转超声钻。