本文系统地介绍了双闭环试验台的工作原理，主要工作部件的参数设计，并对手扶拖拉机室内模拟试验技术问题进行了探讨。
Working principles of dual closed-loop tester and parameter design for its major parts are introduced and indoor simulation testing technique for walking tractor discussed.
探讨了在台架上进行驻车制动器总成的模拟试验方法和评定技术，提出了改善驻车制动性能的途径。
The simulation test method and assessment technique of parking brake assemblies on the bench are discussed in this paper, the approach for improving the performance of parking brake is also proposed.
为了应用和推广这一新技术，我们做了随钻VSP模拟试验，即地表浅层炮井随钻地震速度测量。
In order to spread this technique, I have made trial VSP modeling during shothole drilling: shallow seismic velocity survey during shothole drilling.
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