... 旋转钻井水龙头：rotary drilling swivel 旋转钻：rotary bit 旋转锥形粉碎机：gyratory cone crusher ...
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four wing rotary bit 十字钻头
four-wing rotary bit 四翼钻头
oil field rotary bit 油井旋转钻头
rotary bit for underground mining 地下矿用牙轮钻头
rotary disk bit 圆盘形扁锥 ; [机] 圆盘形扁钻
drag rotary detachable bit 拆卸式刮刀钻头
rotary core bit 旋转式取心钻头
rotary speed of bit [机] 钻头转速
It was found that the rotation speeds of 3 cones in one rotary bit are different, and the speeds of rotation are also different for different types of rock bits.
发现一个牙轮钻头中的三个牙轮回转速度不相同。而不同类型牙轮钻头的牙轮转速也不相同。
Based on analyses about the structures and existing problems of integrally retractable alternative cutting element bits, a integrally rotary replacing cutting element bit was proposed.
在分析各国整体切削具不提钻可换式钻头结构及存在主要问题的基础上，提出采用整体旋转切削具可换式钻头。
The rotary carriage provides rotary and vertical motion to the drill string and bit.
转动滑架为钻柱和钻头提供转动和垂直移动。
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