n.附加物

Here he additament his problem in 5 aspect: (1)change policy; 在這里，他作了五個方面的論述：（1）變革的政策；

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;水質(zhì)改性處理劑;穩(wěn)粘保粘劑;

Water-process additament 水質(zhì)改性處理劑