• A portable and rotary type ultrasonic drilling machine is developed and designed for drilling of carbon fibre composition components.

    碳纤维复合材料构件钻孔研制一种便携式旋转超声

    youdao

  • A portable and rotary type ultrasonic drilling machine is developed and designed for drilling of carbon fibre composition components.

    碳纤维复合材料构件钻孔研制一种便携式旋转超声

    youdao

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