One company has presented an idea in which metal strips inserted in pavements and roads operate fly wheels by means of a piston action using hydraulic fluid.

一个公司提出这样想法：嵌在人行道和路面上的金属条用液压活塞的作用使飞轮转动。

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Air and fuel are drawn into the cylinder by the downward movement of the piston, the piston then moves up and squeezes this mixture which is then ignited.

空气和燃料，是由各该活塞向下运动，活塞然后移动起来，这是挤出，然后点燃混合气进入气缸。

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This article designed a displacement setting mechanism by the fixed quantity of valve model radial column piston as base pump.

以阀式径向柱塞定量泵为基泵设计了控制进油阻力的变量机构。

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The efficiency of his design is further improved by using the moving piston to drive water through a special steam nozzle, which increases the effectiveness of the heat transfer between the inside and outside of the reactor.

ECONOMIST: Nuclear power

After just six years of selling FAA-certified aircraft, the Duluth, Minn. privately held company in 2005 surpassed Cessna in sales of piston aircraft, as measured by dollar volume.

FORBES: Small-Jet Market Heats Up

Conventional four-stroke engines produce power by moving a piston up and down using rapid explosions of fuel and air in a cylindrical chamber.

FORBES: How to get 51mpg from an engine the size of a large turkey.