This paper describes the performance test, contact fatigue strength test and bending fatigue strength test on the gear reducer of involute point contact Ferrographical analysis is made.
本文对渐开线点啮合齿轮减速器进行了性能试验、接触疲劳强度和弯曲疲劳强度试验，同时还进行了铁谱分析。
In this paper, Based on the theory analysis and test, the fracture mechanism and fracture direction of brittle materials are studied.
本文主要通过理论分析和试验，对脆性材料的断裂机理及断裂方向进行研究。
Based on the water-oil phase flow theory, the paper has established the mathematics model of water-oil phase transient well test analysis containing water influence.
基于油水两相渗流理论，建立了考虑含水影响的油水两相不稳定渗流试井分析的数学模型。
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