If staining, we must use an organic dye, that is, natural vegetable dyes, and dyeing process, chemical synthesis may not add any additives.
如果染色，必须用有机染料，也就是纯天然的植物染料，并且在染色过程中，不得添加任何化学合成助剂。
Because the main driving force is the electrode potential in the ECIS process, chemical regeneration of the ion exchange substrate is not necessary.
由于ECIS过程的主要推动力是电极电位，离子交换基体无需再生，消除了由化学再生过程产生的二次污染物。
With the acceleration of global economic integration process, chemical product market competition becomes more intense, and chemical products pricing practices are becoming increasingly complex.
随着全球经济一体化进程的加快，化工产品市场竞争变得更加激烈，化工产品定价工作也随之变得越来越复杂。
The process of biochemical fermentation is a large complex system, containing physical process, chemical process and biological process.
生化发酵过程是个复杂的大系统，包含有物理过程、化学过程和生物反应过程。
To introduce the process of wire drawing process, chemical Cu-plating process and formulation of top grade submerged-arc welding wire for pipe line steel.
介绍管线钢用高等级埋弧焊丝拉丝工艺、化学镀铜工艺及配方。
To introduce the process of wire drawing process, chemical Cu-plating process and formulation of top grade submerged-arc welding wire for pipe line steel.
介绍管线钢用高等级埋弧焊丝拉丝工艺、化学镀铜工艺及配方。
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