Thebalance equation of power driven disc plow is built.

建立了旱田驱动圆盘犁机组的平衡方程序。

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In this article the author presents a systematic philosophy consideration on the fluid power driven and control technology.

在文章里作者展示了对流体传动与控制技术的系统哲学思考。

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A rotary engine attached to the steam engine enabled shafts to be turned and machines to be driven, resulting in mills using steam power to spin and weave cotton.

连接在蒸汽机上的旋转式发动机使轴承转动，机器得以驱动，从而使得利用蒸汽动力纺线和织布的工厂出现。

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They could power electrically driven wheels, letting an aircraft taxi without using its main engines.

ECONOMIST: Electric planes

Early versions of new labor restrictions still being hashed out in Congress would have barred children under 16 from operating power-driven farm equipment and kept anyone under 18 from working at agricultural co-ops and stockyards (the latest version would let kids keep running machines on their parents' spreads).

WSJ: The Panic Over Bullies

Heartening news rang forth from the renewable energy sector this week as a UN-backed study reported that the building of new renewable energy plants has officially overtaken fossil fuel plants in Europe and the US. We also took a look at two brand new types of power plants -- the world's first hydrogen-driven power plant in Italy and the first hybrid coal-solar power plant in Colorado.

ENGADGET: Inhabitat's Week in Green: of mirror cubes and urban icebergs