By digital simulation, the Ac carried wave system and its equivalent Dc system are checked and the feasibility of Dc method equivalent to the Ac carrier wave system is verified.

通过数字仿真，比较了交流载波系统和其等效直流系统，验证了交流载波系统等效直流方法的可行性。

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The studied simulation tester in this paper is a set of test system that can measure the working state of digital automatic level controller of paving machinery.

本文研究的仿真测试器是一套能够对摊铺机数字式自动调平控制器进行模拟测试的系统。

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This article introduces the fundamental concept of power bond graphs, and discusses how to establish bond graphs, status equations, and digital simulation of dynamic responses in a hydraulic system.

本文介绍了功率键合图的基本概念，以直动式溢流阀为例，讨论了键合图的建立、状态方程的建立、液压系统动态响应的数字仿真方法。

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