Using the tool of VC, we develop the test program and corresponding user interface to implement DC parameters automatic test system of VLSI.

具体方法是以VC为工具，编制测试程序及相应的用户界面实现VLS i直流参数测试系统自动化。

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This might be in the area of special interface circuitry, or auxiliary DC voltage sources.

这可能是在特殊接口电路，或辅助直流电压源方面。

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Using interface graphic scheme, this paper presents the parameter optimization method for DC transmission PID controller based on expanding critical ratio method.

基于界面图形化方式，提出以扩充临界比例法为基础的直流输电系统PID控制器参数优化方法。

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