The results demonstrated that the organic sylvite can reduce tar and a relationship between tar and the kind and content of organic sylvite exists to a certain extent.
研究结果表明，所加的有机酸钾能够降低焦油量，且在一定范围内添加钾盐种类及添加量与焦油量具有密切的相关性，对其他诸项也有一定的影响。
Smoking cigarettes that have a lower yield of tar does not substantially reduce the risk for lung cancer.
吸那些焦油含量较低的香烟本质上不能降低癌症风险。
The results indicate that acid and alkali catalysts can increase the tar cracking reaction speed and reduce the activation energy due to the activated center.
结果表明，酸性和碱性催化剂由于活性中心的存在，加快了反应速度和降低了反应活化能。
When coal tar is used or replaces heavy oil as fuel some critical notes must be focused on its application so as to insure glass quality and reduce production cost.
煤焦油替代重油在切换和使用过程中，抓好几个关键点，确保玻璃质量，降低生产成本。
The effects of temperature and residence time on tar cracking in the freeboard of a fluidized bed have been investigated in order to reduce the tar produced in the pyrolysis process of coal.
为降低煤在热解过程中的焦油产率，在一流化床稀相段考察了温度和停留时间对焦油裂解的影响。
The results showed that the urea malic acid treatment can significantly reduce the tar content in smoke smog by 16.9% based on the control treatment.
结果表明，苹果酸脲处理能明显减少烟气中焦油含量，减少量占对照处理的16.9%。
The article aims to reduce carcinogenic PAHs of coal tar pitch.
本文研究了用聚合物与煤焦油沥青反应减少其中的致癌多环芳烃。
The article aims to reduce carcinogenic PAHs of coal tar pitch.
本文研究了用聚合物与煤焦油沥青反应减少其中的致癌多环芳烃。
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