This paper not only discusses all kinds of the loading forms and system efficiency of the life test bed for hydraulic elements, such as oil pump, oil motor and oil crock.

本文对油泵、油马达、油缸寿命试验台的各种加载形式及系统效率进行了分析，并导出了各种加载形式系统效率的一般表达式。

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An automatic testing system for traditional hydraulic pump test - bed was sel up, which includes such functions as signal acquisition, data storing and analysis based on virtual instrument technique.

本文对传统的液压泵试验台测试系统进行了改造，建立了一套基于虚拟仪器技术的集信号采集、分析、存贮等功能为一体的液压泵自动测试系统。

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