清除油脂污垢
climination of urease and fouling deposils
回转式清污机
rotary trash-eliminating machine
清垢(解堵)
treating near borehole zones
清污分流
split flow of clean and waste water
diverting wastewater from clean water
split-flow of effluent and clean water
清污分流与分排
Diffluence and detachment of rinsing and sewage