... VHVI Very High Viscosity Index 很高粘度指数 VII Viscosity Index Improver 粘度指数改进剂 VM Viscosity Modifier 粘度改进剂 ...
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611粘度指数改进剂 Viscosity number improving agent
它不添加粘度指数改进剂也就不存在耗损。
There is no VI improver added so there is nothing to wear out.
考察了加入粘度指数改进剂对内燃机油运动粘度的影响。
The effect of viscosity index improvers on viscosity of engine oils was investigated.
通常全合成机油不含粘度指数改进剂所以添加剂衰减情况轻。
Generally, the synthetic oils do not have VI improvers so have less to lose.
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