impurity content

The hydrocracking tail oil possesses the characteristics of higher viscosity index, pour point, viscosity and lower sulfur, nitrogen, impurity content.

加氢裂化尾油粘度指数高，低硫、低氮、杂质含量少，倾点和粘度偏高。

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control strictly impurity content and ph value of medium.

严格控制介质中杂质含量及pH值。

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At present, the domestic purification technologies of industrial boric acid and borax have a certain gap for preparation of nuclear grade boric acid and borax for high-borosilicate glass. Impurity content is obviously higher than standard or required.

目前国内对工业硼酸、硼砂的纯化技术距离制备核工业级硼酸和高硼硅酸盐玻璃用硼砂还有一定差距，杂质含量达不到要求。

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impurity content and copper grade are the important factors in distinguishing cathode copper quality.

杂质含量与铜品位是衡量阴极铜质量的重要指标，因此阴极铜样品的取样化验方法规范化成为阴极铜购销过程中的关键问题之一。

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Time behaviour of impurity content has been obtained using a fast measuring system.

用快速测量系统记录了杂质组分的时间行为；

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analysis of alkyne impurity content in 1,3-butadiene by capillary gas chromatograph

毛细管气相色谱法分析1,3-丁二烯中炔烃杂质含量

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the results show that the total impurity content and retained phosphorus are the key factors to decrease conductivity, and different forming methods affect the structure and conductivity of copper bar.

研究结果表明：铸锭中杂质的总含量及残留的磷是造成制品电导率降低的关键因素，不同成形工艺影响制品的组织结构和电导率。

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In this paper, the effect of flux components, flux addition and melting temperature on recovery ratio and impurity content was analyzed.

本文实验研究了熔剂配比、熔剂加入量和熔炼温度等对铸造废铝屑的回收率、合金含杂量的影响。

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The impurity content contained in QLT 17, as one of the key indexes, accorded with the demand of insulating material for power cable; the impurities in size of 0.12-0.25 mm were 5, the impurity in size over 0.26 mm was none.

其关键指标杂质含量符合电力电缆绝缘料使用要求0.12~0.25mm的杂质为5个/kg，大于0.26mm的杂质为0。

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a new test method, in which alkyne impurity content in 1,3-butadiene is determined by a capillary gas chromatograph, was introduced.

介绍了一种毛细管气相色谱法测定1,3-丁二烯中炔烃杂质含量的新试验方法。

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the single phase fluid network model is built with the method of prototype network. and it calculates pressure of nodes and flow of slip roads. based on this, it also calculates temperature, enthalpy and impurity content of nodes.

采用网络法建立了单相可压缩流体网络模型，用以计算节点压力和支路流量，并在此基础上计算节点温度、焓值以及杂项含量。

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main component self-compare with calibration factor can be used when testing impurity content.

测定杂质含量时,可采用加校正因子的主成分自身对照法.

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determination of metallic impurity content in zinc oxide by atomic absorption spectrometry

原子吸收法测定氧化锌中金属杂质含量

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