还介绍车用机油测试问题。
The test methods and instrumentations of engine lubricants were also introduced.
比尔说他不喜欢雨的唯一理由是街上的车用机油将会被冲进海洋，并且产生垃圾。
Bill said the only thing he didn't like about rain was that all the motor oil on the streets would get washed into the ocean, and so would all the trash.
介绍了欧洲重负荷柴油机油的规格、欧洲和美国车用发动机油质量保证体系和欧美柴油机油规格的差别及原因。
The specification and development of heavy-duty diesel engine oil in Europe, quality guarantee systems of automobile engine in Europe and American were presented.
介绍了欧洲重负荷柴油机油的规格、欧洲和美国车用发动机油质量保证体系和欧美柴油机油规格的差别及原因。
The specification and development of heavy-duty diesel engine oil in Europe, quality guarantee systems of automobile engine in Europe and American were presented.
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