The accidents caused by improper loading of odds and ends goods arouse much attention in recent years.

近几年出现的几次因笨零货物装载不当引起的铁路运输事故，使得笨零运输安全问题更加引人注意。

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As the loading of the compressor increased, the aerodynamic stability presented a vital problem in the aerodynamic design of the compressors, as many accidents were caused by stall or rotating stalls.

随着压气机负荷的不断提高，气动稳定性的问题日显突出，有失速甚至旋转失速引发的事故时有发生，因此急需在气动设计过程中考虑气动稳定性。

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