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

测量结果就是传动轴工作角(c)。

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！”

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。