介绍了USG600H水下切粒机的结构及工作原理，分析了主要操作条件对产品质量的影响。
The structure and runing principle of underwater strand-granulator type USG600H were in- truduced; The main operation conditions were analyzed how to affect the quality of the product.
铝在天然水体中广泛存在，但净水中的总残余铝主要是在铝盐混凝剂使用过程中不恰当操作条件所引入。
Aluminum is present in all natural water, but the total residual aluminum in drinking water mainly comes from use of aluminum coagulants under improper operational conditions.
本文介绍了热化学方法，即焙烧-消化-分级方法的原理及主要工艺操作条件。
The principles and major technological operational conditions of the thermochemical method, i. e. roasting digestion classification, have been presented in this paper.
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