对内燃机车液力传动油的特性及要求等作了介绍，同时叙述了液力传动油的国内外概况，介绍了新型液力传动油的研究和应用情况。
The general conditions of the research process of the metal setting problem of the high friction composition brake shoes at home and abroad are introduced.
对汽车液力传动系统的优越性、液力自动传动油的作用、性能进行了简要叙述，并介绍了国内、外液力自动传动油的分类和使用。
The advantages of a hydraulic transmission system, the effect and property of hydraulic transmission fluid are given. Its classification and usage at home and abroad are introduced.
对汽车液力传动系统的优越性、液力自动传动油的作用、性能进行了简要叙述，并介绍了国内、外液力自动传动油的分类和使用。
The advantages of a hydraulic transmission system, the effect and property of hydraulic transmission fluid are given. Its classification and usage at home and abroad are introduced.
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