The study showed that plane, train, bus or automobile passengers are at higher risk of VTE when they remain seated and immobile on journeys of more than four hours.

研究表明，飞机、火车、公共汽车或汽车乘客在4小时以上旅程中保持坐姿不动，面临罹患静脉血栓栓塞的较高风险。

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This paper introduces the study of damping property in compound automobile plates.

本文介绍对汽车用复合钢板阻尼性能的研究。

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This paper is intended to provide an analytical and experimental study of torsional vibration of the automobile power train.

本文对汽车动力传动系统进行了讨论分析和试验研究。

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The standard mileage rate for business is based on an annual study of the fixed and variable costs of operating an automobile.

FORBES: 2013 IRS Mileage Rate Increases To 56.5 Cents Per Mile

Los Angeles as a long-term case study in one of the few cities principally developed after the invention of the automobile reveals an even more depressing underside to the data.

FORBES: List: America's Most Polluted Cities