查询词典 viscosity

Measuring the coefficient of dynamic viscosity of 0-60g/l salt water under 10-30℃ by capillary tube viscosimeter, and performing the mathematical regression of coefficient of dynamic viscosity about temperature and concentration in order to realize the influence of temperature and concentration on dynamic viscosity of salt water.

2为了解温度和浓度对咸水粘滞系数的影响，使用品氏毛细管粘度计测定10—30℃下，浓度在0—60g/l之间的咸水的粘滞系数，并对咸水粘滞系数进行了浓度和温度的数学回归

The yield of the poly-alpha-olefins synthetic lubricant is 81.42%. The results show that the viscosity at 100℃ is 4.87mm^2/s, the viscosity at 40 is 21.15mm^2/s, the viscosity index is 126, the condensation point is -62℃.

结果表明，产品收率为81.42%，100℃的粘度为4.87mm^2/s，40℃的粘度为21.5mm^2/s，粘度指数为126，凝点为－62℃。

This work presents a viscosity model based on Peng-Robinson cubic equation of state for a better description of viscosity. A viscosity model has been developed based on the similarity between PVTand TμP relationship and the PR EOS.

本文基于P-V-T-与T-μ-P关系的相似性，结合Peng-Robinson立方型状态方程，建立了一个预测纯烷烃气液相粘度的统一模型。

Polyringlpyrrolidoneas a viscosity increaser is used to adjust the viscosity of the sols.When the molar ratio of PVP:Al(OC_3H_7)is up to 1:1,the viscosity of the PVP assisted sol increases from 2.3 to 31.5 mPa·s,and homogeneous,uniform and crack-free 1 mol%Er~(3+)-10 mol%Yb~(3+)codoped Al_2O_3 thin films with the thickness of 1.6μm are formed by 10 dipping and drying cycles sintered at 1000℃.

以聚乙烯吡咯烷酮为增粘剂，调节DCPA改性溶胶的粘度，PVP(K-90)：Al_3的摩尔比为1：1时，溶胶粘度由原始溶胶的2.3增加到含PVP溶胶的31.5mPa·s，仅经过10次循环提拉、干燥，1000℃烧结，制备出表面均匀完整，无开裂厚度约为1.6μm的1 mol%Er~(3+)-10 mol%Yb~(3+)共掺杂Al_2O_3薄膜。

In the condition of keeping F、 K、Na content fixed, To improve slag structure and raise slag melting point and viscosity, MgO content is raised and TiO〓 is added. the main content is as follows:(1) Keeping CaO/SiO〓 fixed, MgO content rises from 10% to 16%, the free running temperature goes up 106℃, the viscosity goe down at bigger than 1425℃, but difference is little; keeping /SiO〓 fixed, MgO content rises from 10% to 16%, the free running temperature rises 87℃, the viscosity rises too; adding TiO〓 to 5%, the free running temperature goes up 98℃, the viscosity rise a little.(2) Powder crystal x ray diffraction and microscopic analysis shows: increasing MgO content, the cuspidine will decreace or even disappear, the monticellite goes up with MgO content rising, keeping /SiO〓 fixed, Akermanite content goes up, for high melting point minerals appear or go up, the free running temperature of the slag bearing F is raised; Adding TiO〓, high melting point mineral—Perovskite forms, it can making other minerals'crystalling fast, it is the reason that TiO〓 raises the free running temperature of the slag bearing F.

2对测定粘度的冷凝渣所进行的X粉晶衍射及显微分析和鉴定表明，增加MgO含量，渣中枪晶石将减少甚至消失，而钙镁橄榄石则随MgO含量增加而增加，在／SiO〓不变时，黄长石含量也有所增加，高熔点矿物的出现和增加，提高了含氟熔渣的熔化性温度；加入TiO〓熔渣中将形成高熔点矿物-钙钛矿，钙钛矿的形成还促使黄长石的结晶，这是TiO〓提高含氟熔渣熔化性温度的根本原因。

Its model performance is as follows: Piao fears ㄕ of deputy Po any of several hot spice plants pulling magpie to light?W/40 motion viscosity / 95100 ℃ of ℃ of Mm2 · S-1ASTM D44540 viscosity of motivation of low temperature of ℃ of 175 ASTM D2270-30 of 15.5 viscosity index / cryopump of ℃ of MPa · S 6400 ASTM D5293-35 sends viscosity / ash content of sulfate of MPa · S 28000 ASTM D4684, alkaline value of %1.0 ASTM D874 / flash point of MgKOH · G-110.6 ASTM D2896/℃ 224 ASTM D92 /℃- card of carapace of 36 ASTM D97 rolls out Rotella T5W/40 to synthesize engine oil of derv of heavy burden carry on one's shoulder completely

其典型性能如下：项目指标方法粘度等级5W/40运动粘度/mm2·s-1ASTM D44540℃95100℃15.5粘度指数175 ASTM D2270-30℃低温动力粘度/mPa·s 6400 ASTM D5293-35℃低温泵送粘度/mPa·s 28000 ASTM D4684硫酸盐灰分，%1.0 ASTM D874碱值/mgKOH·g-110.6 ASTM D2896闪点/℃224 ASTM D92倾点/℃-36 ASTM D97壳牌推出Rotella T5W/40全合成重负荷柴油机油

Adding sugar to the three raw starch and their low cross-linkedsuccinylated starch,the viscosity and thermal paste viscosity were rised eventually; addingcitric acid, lactic acid and sodium chlorid to the three raw starch and their low cross-linkedsuccinylated starch, the final viscosity and thermal paste viscosity showed varying degreesof decline.

加入蔗糖使的三种原料淀粉及其低交联酯化淀粉的热糊粘度与最终粘度有所上升；加入柠檬酸、乳酸、氯化钠后使得三种原料淀粉及其低交联酯化淀粉的热糊粘度和最终粘度呈现不同程度的下降。

The sizes of the self-assembly micelles of the amphiphilic block copolymers and the effects werestudied by dynamic light scattering and UV-visible spectrophotometer. The micelle sizes werelargely influenced bythe hydrophobic chain content in the copolymer, the properties of the solvent and the copolymer concentration in the organic phase. The morphology of the micelles was investigated by transmission electron microscopy. Theresults showed that the micelles appeared spheres with inner core and outer shell. The critical association concentrations were determined by pyrene monomer fluorescence probe technology. The degradability of copolymer was studied by the loss of the intrinsic viscosity in the degradation process. The results indicated that the degradation rate of PECL was slower thanthat of PELLA and PEDLLA. The stability of the copolymer micelle dispersion was examined by measuring the critical flocculation concentration, which gradually decreased with increasing the content of thehydrophobic chain in the copolymer. The rheological results showed thatthe viscosity ofthe micelle dispersion with higher content of PEG segments was firstly decreased and then increased with the increasingthe temperature. Otherwise, the variation of viscosity was irregular. The viscosity of the micelle dispersion increased with the increase of the electrolyte (Na 2SO 4) concentrations. Polymer micelles paclitaxel was prepared by self-emulsification/solvent evaporation method and solid dispersion technique with amphiphilic block polymers as the carrier material.

运用动态光散射和紫外分光光度计研究了两亲性嵌段共聚物自组装胶束的粒径及其影响因素，结果表明，自组装胶束的形成机理受制备方式的控制，胶束的粒径随着共聚物相对分子质量或疏水嵌段相对分子质量和有机相中共聚物浓度的增大而增大，随着有机溶剂的水溶性的增强而减小；采用透射电镜观察胶束的形态结构，发现胶束呈具有核壳结构的均匀球形；采用芘荧光探针法测两亲性嵌段共聚物的临界聚集浓度；通过降解过程中共聚物特性粘度的变化研究两亲性共聚物的降解性能，发现与PELLA和PEDLLA的相比，PECL 降解速率较慢；随着共聚物中疏水嵌段含量的增大，纳米分散液的稳定性逐渐下降；PEG含量高的PEDLLA纳米分散液随着温度的升高，纳米分散液的粘度先下降然后增大，反之，没有规律性，且随着电解质Na 2SO 4浓度的增大，体系粘度增大。

With the development time extension, the development effect worse gradually of Chaoyanggou oilfield, There is some low permeability thin oil that traditional production techniques can not realized in Fuyu and Yang da cheng zi layer of Chaoyanggou oilfield. The crude oil viscosity is high; the relationship between viscosity and temperature is sensitive. The viscosity has big fluctuating along with the temperature change. According to the development experience of inspissated pool and the research results of numerical simulation by STARS, thermal recovery technique is an efficient method used to improve the development effectiveness of low permeable and high viscosity blocks.

随着开发时间的延长，朝阳沟油田开发效果逐渐变差，扶余、扬大城子油层存在常规开采工艺技术无法满足的低渗透稀油，根据稠油油田开发经验和应用商业化软件 STARS 热采模型蒸汽吞吐数值模拟研究结果，采用热力采油技术是改善低渗透、高粘度区块开发效果的有效途径，因此在朝阳沟油田开展热力采油现场应用研究。

Defined as: fluid dynamic viscosity and temperature of the water, the ratio of dynamic viscosity to offer unlimited amount of steel, and sometimes it's also increasing solution of kinematic viscosity with temperature in the ratio of dynamic viscosity solutions.

定义为：流体的动力粘度与温度下水的动力粘度之比，为无量钢量，有时它也提高分子溶液的动力粘度与同温度下纯溶液动力粘度之比。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐