A new type of rotary bits was manufactured by processing the PDC product into drilling cutting buttons and then embedding them into rotary bits.
将金刚石复合体加工成凿岩切削齿，应用于旋转钻头上，设计制造了新型旋转钻头产品。
A new type of rotary bits was manufactured by processing the PDC product into drilling cutting buttons and then embedding them into rotary bits.
将金刚石复合体加工成凿岩切削齿，应用于旋转钻头上，设计制造了新型旋转钻头产品。
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