• The effect of viscosity index improvers on viscosity of engine oils was investigated.

    考察了加入粘度指数改进剂内燃机运动粘度影响

    youdao

  • The oil companies have added viscosity index improvers or VII to oils to solve this dilemma.

    机油厂家不得不添加粘度指数改进剂(VII)解决这个问题。

    youdao

  • The oil companies have added viscosity index improvers or VII to oils to solve this dilemma.

    机油厂家不得不添加粘度指数改进剂(VII)解决这个问题。

    youdao

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