Pretreating method, detection limits, accuracy and feasibility are analyzed, sources of heavy metals are listed.
分析了预处理方法的选择、检测限、精密度、可行性，以及羊绒制品中重金属的来源；
By using special pretreating method before plating aiming at the characteristics of good chemical stability and hydrophobic behavior of PP.
针对PP化学稳定性好、憎水性强的特点，采用了特殊的镀前处理方法。
Another pretreating method was that the sample was dissolved in nitric acid and perchloric acid. It proved that the method was simple and convenient with accurate results.
介绍了用硝酸及高氯酸处理试样后进行铁、铜含量的测定分析，方法简便，回收率高，分析结果令人满意。
A pretreating method for waste nylon 6 short fiber was proposed to improve the adhesion between short fiber and waste PP matrix and the dispersion of short fiber in matrix.
出一种废尼龙6短纤维预处理方法。采用这种方法能提高短纤维与废pp基质的粘合性能并改善短纤维在基质中的分散。
Compared with common sample pretreating method of organic solvent extraction, this method showed the advantages of simple procedure, very little loss of analyzed sample, rapidity and sensitivity.
相比目前常用的有机溶剂萃取的样品处理方法，该方法显示了步骤简单、待分析物损失量小和快速灵敏的优点。
The invention relates to a method for pretreating ore pulp in a lead and zinc oxide flotation process.
本发明涉及一种氧化铅锌矿浮选过程中矿浆预处理的方法。
In this paper, the author proposes a method for the optimal design of pretreating industrial wastewater by distillation method.
提出用精馏法预处理工业废水的一种优化设计方法。
In this paper, the author proposes a method for the optimal design of pretreating industrial wastewater by distillation method.
提出用精馏法预处理工业废水的一种优化设计方法。
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