Allison transmission Division (ATD) is the world's largest producer of automatic transmissions for medium and heavy-duty trucks, buses and specialty vehicles.

艾里逊变速箱部是全球最大的中型和重型卡车、公共汽车与专业用车的自动变速箱生产商。

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We will continue to bring you integrated air handling solutions to the demanding requirements of tomorrow's medium and heavy duty diesel engines, and beyond .

我们将继续推出整套空气压缩解决方案，适应未来的大中型柴油屐机的严格需求。

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The study on 680 medium & heavy-duty industrial gear oils developed by LPPCC was described.

对兰炼研制的680中、重负荷工业齿轮油的研究进行了阐述。

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Unlike the light-duty vehicle market, most medium- and heavy-duty truck purchasers operate on slim profit margins where fuel costs are a major factor in their economic survival.

FORBES: Magazine Article

Already, the Obama Administration has made historic progress through investments in clean energy, new fuel economy standards for cars and light-duty trucks that will save approximately 1.8 billion barrels of oil, and steps toward the first-ever fuel economy standards for medium- and heavy-duty trucks.

WHITEHOUSE: President Obama to Visit Indianapolis

In addition to medium and heavy-duty trucks and buses which are clearly used by businesses, commercial vehicle numbers in China include sales of light trucks and mini trucks and buses, many of which are used by individuals and small businesses.

FORBES: China's key economic indicator: auto sales