The needle roller clutch bearing is a kind of compound function bearing which transmits torque between the shaft and housing in one direction and allows free overrun in the opposite direction.
滚针离合器轴承是可单向传递轴和轴承座之间的扭矩，而反方向允许自由转动的一种复合功能轴承。
The results show that mighty compound cutting can give a good effect of sinking and blasting in hard rock shaft, and sinking velocity adopted for 2.
试验表明：强力复合掏槽在特硬岩立井掘进爆破中应用效果良好；2。
The results show that mighty compound cutting can give a good effect of sinking and blasting in hard rock shaft, and sinking velocity adopted for 2.
试验表明：强力复合掏槽在特硬岩立井掘进爆破中应用效果良好；2。
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