常見(jiàn)例句雙語(yǔ)例句A portable and rotary type ultrasonic drilling machine is developed and designed for drilling of carbon fibre composition components.為碳纖維復(fù)合材料構(gòu)件的鉆孔，研制出一種便攜式旋轉(zhuǎn)超聲鉆。 返回 rotary ultrasonic drilling