The activated clay with high decoloring capacity can be prepared by the optimization of process conditions of acid-activation of bentonite.
通过优化酸活化膨润土工艺条件，制备高脱色力活性白土。
Using NaSCN as solvent, flat acrylic fiber was produced by two-step wet spinning process. The selection of spinneret shape and the optimization of process conditions were discussed.
采用硫氰酸钠为溶剂，湿法二步法工艺生产扁平腈纶，探讨了喷丝板的选型和生产工艺的优化。
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