But the fact is: due to its continuous and fast circumrotation as well as its complicated structure, very often there are some problems which results in economic losses and even casualties.

• 但是实践证明由于其长期连续高速旋转，且设备结构复杂，容易发生设备故障，造成设备瘫痪甚至造成巨大的经济损失和人员伤亡。