This measurement will give you the propeller shaft Angle (C).

测量结果就是传动轴工作角(c)。

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When the eagle looked down, he found that the shaft of the arrow was feathered with one of its own plumes. "Alas! " it cried. "We often give our enemies the means for our own destruction.

它低头看到箭尾竟是由一根它自己的羽毛制成的，就痛苦地说： 甏“唉，我们总是给敌人提供毁灭我们自己的工具！”

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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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