航空发动机风扇叶片常常因为疲劳裂纹而引起整个结构的损坏，导致重大的安全事故。
The severe safety accidents are induced because the fatigue cracks in fan blade of the aero-engine generally result in the malfunctions of the engine components.
航空发动机风扇叶片常常因为疲劳裂纹而引起整个结构的损坏，导致重大的安全事故。
The severe safety accidents are induced because the fatigue cracks in fan blade of the aero-engine generally result in the malfunctions of the engine components.
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