This paper introduces the application of PLC in the hydraulic pressure drive control system of power-slipway and the design of the system in PLC selecting, hardware design and programing.

阐述了PLC在动力滑台的液压传动控制系统中的应用，并从PLC的选择、硬件设计和程序编制等方面对控制系统的设计作了介绍。

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The safety valve can make the lifting fluid-pressure drive circuit of a fork lift truck or a crane obtain not only high efficiency ascending speed, but also reliable and safe descending speed.

该安全阀使叉车或起重机的起升液压驱动回路既有高效率的上升速度，又有可靠的安全下降速度。

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Construction vehicle's hydraulic pressure drive system is composed of diesel, hydraulic pump, hydraulic motor and working system, they interact each other.

工程车辆液压驱动系统由发动机、液压泵、液压马达、行走机构组成，这四个部分之间相互联系和影响。

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President Umaru Yar'Adua has come under pressure to step up his anti-graft drive in one of the world's most tainted countries since he came to power in 2007.

VOA: standard.2009.04.18

The market is seeing an upside corrective bounce following recent strong selling pressure that drive prices to a six-week low on Tuesday.

FORBES: Comex Gold Sees Corrective Bounce Amid Mildly Bullish "Outside Markets"

The market saw an upside corrective rebound and some bargain-hunting buying interest following recent strong selling pressure that drive prices to a six-week low on Tuesday.

FORBES: P.M. Kitco Metals Roundup: Comex Gold Ends Up On Corrective Bounce Following Recent Selling Pressure

They are also freer from the numerous "status competitions" (the social pressure to drive a fancy car, wear designer clothes, enroll the children in private schools and take European vacations) that further drive up the cost of living in big cities and suburbs.

FORBES: Wriston's Law Still Holds