Based on the problems of low viscosity index and the acidity increasing in the lubricating base oil,it has been found that the unstable quality of the crude oil was the root cause to effect on the quality of the base oil by analysis for long time;the low viscosity index and the higher acidity were resulted from the low paraffinicity and the high content of aromatics,cyclane.
针对润滑油基础油相继出现的黏度指数降低、酸值升高等问题,跟踪分析了润滑油基础油质量,认为原油的变化是造成润滑油基础油质量变化的根本原因;基础油组成中烷烃含量降低,芳烃和环烷烃含量上升是其酸值上升和黏度指数下降的内在原因。
9%,the viscosity index was 23.
9%,黏度指数为23。
The influence of different mass fraction of Cu-Ni-Sn nano-particles,SiO2 nano-particles,ultra-fine serpentine powders on base oil viscosity and viscosity index(VI) was discussed by Ping’s capillary viscometer.
采用综合热分析仪测试纳米铜、镍、锡和SiO2粉以及超细蛇纹石粉的差热分析曲线,研究了常用固体润滑添加剂的热稳定性,并用平氏毛细管黏度法研究了含不同质量分数纳米金属Cu-Ni-Sn粉、纳米SiO2粉和超细蛇纹石粉对基础油黏度及黏度指数的影响。
Discussion on problems in preparation of coal sample for caking index determination;
制备黏结指数煤样应注意的问题
Discussion on the factors and countermeasures influencing the accuracy of the determination of caking index of bituminous coal
浅谈烟煤黏结指数准确测定的因素及对策
The process and significance of the upgrading from National standard GB 5447 to International standard ISO 15585 relating to standard anthracite used for caking index determination were recommended.
介绍了GB5447升格成为国际标准ISO 15585有关黏结指数测定用标准无烟煤的过程和意义;研究了标准无烟煤的遴选原则及其关键性质;讨论了标准无烟煤的质量鉴定和量值传递方法;同时介绍了黏结指数法及其所用标准无烟煤在国外的推广和应用情况。
Selection of Feedstock for OCP Viscosity Index Improver
乙丙共聚物(OCP)黏度指数改进剂原料优选
testing methods for kinematic viscosity and calculating method for viscosity index of crude oil and petroleum products
原油及石油产动粘度试验方法及石油产品黏度指数计算方法
Comprehensive Analysis of Lube Oil Viscosity Index Improvers and Spectroscopic Characterization for Sequence Distribution of Ethylene-Propylene Copolymer;
润滑油黏度指数改进剂的综合分析及乙丙共聚物序列结构的波谱表征
Blood viscosity, plasma viscosity, aggregation index of RBC( AIRC) and fibrinogen were also assayed respectively.
还分别测定了全血黏度、浆黏度、细胞聚集指数(IRC)纤维蛋白原及血小板聚集率。
Effects of Determining UHMWPE Inherent Viscosity by Viscosity Method
黏度法测定UHMWPE特性黏数的影响因素
Discussion on How the Process of Sample Preparation Impacts the Caking Index of Bituminous Coal
浅谈制样过程对烟煤黏结指数的影响
Discussion on the factors and countermeasures influencing the accuracy of the determination of caking index of bituminous coal
浅谈烟煤黏结指数准确测定的因素及对策
"M" METHOD MODIFICATION BASED ON FUNCTION TO SOLVE CU INDEXES OF OVERCONSOLIDATION COHESIVE SOIL
基于超固结黏性土CU指标求解函数的“m”法修正
Two-phase Flow Numerical Simulation in the High Viscosity Slurry Based on Shear Principle
基于剪切原理的高黏度浆料两相流数值模拟
THE φ FUNCTION METHOD FOR PREDICTING THE REMAINING OIL BY VISCOELASTIC POLYMER FLOODING
黏弹性聚合物驱剩余油饱和度预测的φ函数法
The relationship between semen viscosity and semen analysis parameters on male infertility
精液黏度与精液分析参数及男性不育的关系
Digital Viscometer for Magnesium Alloy with Semi-solid
半固态镁合金数字黏度仪的研究与设计
Correlation Study on Strength Parameters of Slide Surface Silty Clay of Landslide in Chongqing Reservoir Area
重庆库区滑带粉质黏土强度参数相关性研究
Deduction and application of strength parameters of soft clay by use of vane strength
用十字板强度推算软黏土抗剪强度指标的方法及应用
Formula and Application of Undrained Shear Strength Index of Saturated Clay Under Arbitrary Degree of Consolidation
饱和黏土任意固结度强度指标计算公式及工程应用
bivariate exponential desity functions
二变量指数密度函数
Inflammation of mucous membranes, especially of the nose and throat.
黏膜炎黏膜的发炎，尤指鼻子和喉咙的黏膜发炎
counter-pointer altimeter
计数器指针式高度表