n.附加物
Here he additament his problem in 5 aspect: (1)change policy; 在这里，他作了五个方面的论述：（1）变革的政策；
Keywords Sewage;Dissolved polymer;Viscosity of polymer;Water-process additament;Viscosity-remaining additament; 采油污水;配制聚合物;聚合物粘度;水质改性处理剂;稳粘保粘剂;
Water-process additament 水质改性处理剂
