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- boiliing point depression 沸点降低
- The copolymers of EFMA have effects on pour point depression and viscosity reduction of waxy crude oil. 合成了EFMA降凝剂,并考察了它的合成条件和降凝效果。
- The four properties, vapour pressure lowering, freezing point depression, boiling elevation, and osmotic pressure, are known as the colligative properties of solutions. 溶液的这四个特性:蒸汽压下降、凝固点降低,沸点升高和渗透压,称为溶液的依数性。
- Effects of raw material and product color of alkyl naphthalene on the pour point depression of lube oil were investigated. 考察烷基萘的原料(石蜡熔点)和产品色度对该剂降凝效果的影响。
- Mass fraction of Pt being 0.4%, that of F being 1.50%, the bifunctional catalysts prepared by tertiary ammonium exchange h ave better property of pour point depression. 经 3次?交换 ;w(Pt)为 0 .;4%25;载体酸性改进剂w (F)为 1
- A device for determining molar mass with freezing point depression was improved,which consists of the Dewar bottle,sample container,Beckmann thermometer,and motor stirrer. 介绍一个改进的凝固点下降法测定摩尔质量实验装置,它由保温瓶、凝固点杯、贝克曼温度计、电动搅拌器等几部分构成。
- The quality of diesel oil producing was advanced by isomery pour point depression technique applying in hydrogenation unit in Harbin Petroleum Company Branch of PetroChina. 介绍了中国石油哈尔滨石化公司柴油加氢精制-临氢降凝装置采用异构降凝技术提高产品柴油质量的生产情况。
- Some differences have also been found in the formation products produced by mechanical alloying and rapid quenching, for example, on melting point depression, hardenability and thermal stability. 机械合金化也对力学性能产生很大影响,比较机械合金化技术和快淬技术制备同一种亚稳材料,发现在熔点降低,硬度和热稳定性等方面有差异。
- A pour point depressant (PPD) for improving the cold fluidity of diesel oils was studied. 摘要对柴油降凝剂进行了研究,降凝剂为苯乙烯、顺丁烯二酸酐及正十八胺三元共聚物。
- Freezing point depression of solution 溶液的凝固点的降低
- constant of freezing point depression 冰点下降常数
- A terpolymer of styrene,diisooctyl maleate,octadelyl acrylate was synthesized as pour point depressant for base-oils. 合成了苯乙烯-马来酸二异辛酯-丙烯酸十八酯三元共聚物用作基础油降凝剂。
- freezing point depression method 冰点降低法
- At last,we discuses the use of pour point depressant and viscosity reducer for super viscosity crude oil. 同时对特稠油的降凝降粘应用作了一定探讨。
- Synthesis and purification of long chain alkyl acrylate as intermediate of pour point depressant were introduced . 介绍了降凝剂中间体丙烯酸高碳醇酯的合成和产品分离提纯方法。
- An application of wheel flow simulator in the evaluation of pour point depressant is described in this paper. 探讨了用转轮流动模拟器评价原油降凝剂的效果和模拟输油管道输送添加降凝剂含蜡原油的工业性试验的可行性。
- molal freezing point depression constant 重量摩尔冰点下降常数, 重量摩尔凝固点下降常数
- At this point your logic is at fault. 在这一点上你的推理是错误的。
- J point depression with downward sloping ST segment J点压低伴下斜型ST段
- In point of cost, we'll have to discuss it at the next meeting. 至于费用方面,我们只好留到下次会议再讨论。