Based on the data of CBR tests for different soils, the mechanism and influencing factors are studied, and the problems existed in the regulation for CBR tests are discussed.
本文根据大量不同土料的CBR试验数据，对CBR试验的作用机理和影响因素进行了研究，并对有关CBR试验规程中存在的问题进行了探讨。
Based on an analysis of the problems existed in DC voltage withstand test for rubber plastic cable, some methods currently suitable for testing rubber plastic cables are compared.
在分析橡塑电缆直流耐压试验存在问题的基础上，对目前适合的橡塑电缆试验的几种方法进行比较。
Based on the problems existed in application and mechanical design for present electric locomotives, discusses the design of locomotive frame, wheel pair, spring tray and driving unit.
从现用工矿电机车机械设计及应用中存在的问题，对车架、轮对、弹簧托架、传动装置的设计方面进行了探讨。
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