杂质粒子

PVC树脂中杂质粒子的来源及消除方法

Sources of impurity particles in PVC resin and it 's elimination methods

系统地分析了PVC树脂中杂质粒子的来源和产生原因，提出了解决的方法。

The sources and arising reasons of impurity particles in PVC resin was systematically analyzed . Some countermeasures on it was given .

HL-lM装置杂质粒子输运与约束特性

Features of impurity transport and particle confinement on HL-lM tokamak

聚氯乙烯中杂质粒子的产生原因及解决措施

Reasons on creation of impurity particles in PVC and its countermeasures

而约束区杂质粒子输运则比新经典的值大很多，是反常的。

In the confinement range the impurity diffusion coefficient is much higher than that estimated with new classical theory .

自然界中橄榄石导电是因为其中掺杂了铁、氢或者别的杂质粒子引起，镁离子占据全部阳离子位置时，橄榄石不会导电。

Conduction of natural olivine is induced by mixing of other particles like Fe , H. When Mg atom holds all cation positions , olivine is not conductive . 3 .

杂质粒子与所用原材料、设备、工艺、聚合配方组分及氯乙烯单体中的铁化合物有关。

It was pointed that the impurity particles are relate to the raw material , equipment , process , polymerization formula and the iron compound content in vinyl chloride monomer .

偏滤器抽气系统是托卡马克装置重要组成部件，其作用是排除氦灰、未反应的燃料气体及杂质粒子，提高偏滤器性能。

The pumping system of divertor is important to tokomak . The purpose of the system is to pump helium ash , unburned fuels and the impurities to enhance the performance of divertor .

通过分析聚氯乙烯树脂中杂质粒子产生的主要原因，提出了在采购、保管、生产、清理、分析等环节的解决措施。

The main reasons on impurity particles creation in PVC resin was analyzed . Some countermeasures , which can be taken in sector of purchase , storage , production , cleaning and analyzing , was put forward .

采用该法制备高纯活性纳米γ-Al2O3，具有原料价格便宜，设备及操作过程简单，能有效除去杂质，粒子分散性好、环境污染小等优点，从而具有较好的工业化发展前景。

In using this method to prepare high purity γ - Al_2O_3 nanoparticle , there are superiorities such as cheap raw materials , simple equipment and easy operation , effective exclusion of impurities , well-distributed particles and less environmental pollution . This offers a better prospect of industrialized development .

能够从燃料中过滤出杂质和金属粒子的放在燃料中的过滤器。

A filter in the fuel line that screens out dirt and rust particles from the fuel .

GB/T9348-1988聚氯乙烯树脂的杂质与外来物粒子数的测定方法

Determination of number of impurities and foreign particles of polyvinyl chloride resins