三级纯氧活性污泥装置的英文

three-stage oxygen activated sludge system

• 三级:    three-level; Fully ...
• 纯:    pure; unmixed
• 氧:    oxygen
• 活性:    activity; active; ...
• 污泥:    mud; mire; sewage ...
• 装置:    installation; devi ...