The mainshaft bearings of aircraft engine are key parts of plane, its reliability and life affect directly on the reliability and life of engine and even whole plane.
航空发动机主轴轴承是飞机关键部件的关键零件，其可靠性和寿命直接关系着发动机乃至飞机的可靠性和寿命。
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As one of the key parts of the aeroengine main-shaft, the dynamic performance of high-speed cylindrical roller bearing directly affects the dynamic characteristic and reliability of the mainframe.