... 粘度指数 vi viscosity index; viscosity exponent; viscosity index figure 润滑油粘度 lubricating oil viscosity 对数粘度指数 log viscosity index ...
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high-viscosity index lubricating oil 高粘度指数润滑油
With the increasing soot level contaminating lubricating oil, the oil viscosity increase and wear of engine components become more severe. And it shortens the life of engine.
柴油机油引起的粘度增长不仅缩短了柴油机的使用寿命，而且增加了零部件的磨损。
Bright stock Refined, high viscosity lubricating oil usually made residual stocks by suitable treatment, such as a combination of acid treatment or solvent extraction with dewaxing or clay finishing.
加工处理的方式包括：酸处理(或溶剂萃取)脱蜡(或粘土精制)相结合。
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