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对内燃机油运动粘度的影响。
And the above heavy fraction base oils were applied to the formulation of engine oils and a series of blending projects were obtained.
并将以上重组分基础油在内燃机油配方中进行了应用，得到了相关内燃机油产品的调合方案。
Four-ball wear test indicated, the borate ester and ZDDP additive are antiwear synergistic, which is much useful in developing low-phosphorus engine oils.
四球长磨实验还表明，该硼酸酯添加剂与ZDDP类添加剂具有优秀的抗磨协同作用，这对研制低磷发动机油具有重要的意义。
The composition and viscosity properties of biodegradable two-stroke gasoline engine oils were investigated.
研究了可生物降解二冲程油的基础油组成及其复合后基础油的粘度特性。
The contrast shows that the top grade engine oils are being developed toward fuel economic and environmental protection.
通过对比可以看出，高档内燃机油越来越注重节能以及环保的要求。
The all test system works well in the actual operation, which has been successful used as the evaluating detergency test for TC-W3 grade water-cooled two-stroke gasoline engine oils.
实际评定试验中整套装置运行稳定、可靠，已成功用于TC - W3高档水冷二冲程汽油机油的清净性评定。
The all test system works well in the actual operation, which has been successful used as the evaluating detergency test for TC-W3 grade water-cooled two-stroke gasoline engine oils.
实际评定试验中整套装置运行稳定、可靠，已成功用于TC - W3高档水冷二冲程汽油机油的清净性评定。
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