To simulate combined testing for all of the important bearings on aviation engine main shaft, a shafting bearing tester is designed.

为模拟航空发动机主轴轴系所有重要轴承联合试验，研制了航空发动机轴系轴承试验机。

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Macro examination, metallographic microscope, microhardness tester and X ray diffractometer were utilized to study the failure reasons for connecting rode bearing bush of automobile engine.

采用宏微观检验、显微硬度测定、X射线衍射等方法对汽车发动机连杆轴瓦的失效进行了分析。

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