Vehicle power steering systems control direction and flow of pressure oil with servo valves, then transfer angular inputs from steering wheels to corner angular outputs of road wheels.

车辆液压动力转向系统通过伺服阀控制压力油的方向和流量，把转向盘输入的转角信号转变为车轮的偏转角度输出。

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Engineering die-casting, carburetor parts, axle housings, motor housings and road wheels.

机械铸件、化油器零件、轮轴箱、马达箱、车轮。

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It can test a vehicle fitted with standard road wheels and tyres or, alternatively fitted with steel wheel substitutes.

它可以对安装有标准车轮和轮胎的车辆进行试验，或者对安装有车轮替代品的车辆进行试验。

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Up the road came the sound of creaking wheels and then, a slow cloud of dust.

VOA: special.2009.11.14

Biking through the Italian countryside, riding the winding roads of Napa Valley hitting the road on two wheels is one of the best and most leisurely ways to see an area, with the added cardio benefit of an active vacation.

FORBES: The World's Top Luxury Bike Outfitters

Raw sewage meandered down the middle of the road, passing between the wheels.

NEWYORKER: Naima

Yet the policy prescriptions are simple and proven: enforced speed limits, helmet laws for those on two wheels, good road design and more driving tests.

ECONOMIST: Road safety