This paper introduced the hardware and software constitution of the step-motor direct control system with PLC, and expounded the application in the engine control system in bench test.

介绍了运用PLC直接控制步进电机系统的软硬件组成，阐述了PLC直接控制步进电机技术在发动机台架试验测控系统中的应用。

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The paper discusses and probes into the application of adaptive control in mine hoist direct-current velocity modulation system.

本文对自适应控制在矿井提升机直流调速系统中的应用进行了研究和探讨。

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In the direct numerical control system of the computer, PID controller is realized by the PID controlling algorithm procedure.

在计算机直接数字控制系统中，PID控制器是通过计算机PID控制算法程序实现的。

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The mayor has no direct control over education, though he could probably take over the system if he wanted to.

ECONOMIST: Detroit

Well, if Europe has a major recession, and the financial system in Europe starts spinning out of control, that will have a direct impact on U.S. growth and our ability to create jobs and people raising their living standards.

WHITEHOUSE: President Obama Holds a Press Conference at the APEC Summit

By comparison, Apple and RIM offer direct control over the devices that implement their operating systems and have measures to detect and disable attempts to modify the operating system.

FORBES: An Apple Win Deals Another Blow to RIM's Blackberry