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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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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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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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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