Under the equal condition, rotate the nozzle by oneself, can be designed in accordance with the actual need while vary the size of aperture of hole, gush out the distance longer effectively, it is apt to give play to the role of its pulse broken rock.

• 同等条件下，自旋转喷头，成孔孔径大小可依实际需要设计，有效喷距较长，易于发挥其脉冲破岩作用。