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污水净化
ecol.	clarification of sewage; decontamination of polluted water
econ.	the sewage purification
hydroel.st.	sewage purification
tech.	clarification of sewage (法); foul water purification; purification of sewage; purification of sewerage; purifying of sewage; refuse water purification; sewage clarification; sewage purification plant; sewage treatment
textile	effluent purification; waste water purification
water.res., ecol.	wastewater renovation
污水净化法
met.	clarification of sewage
污水净化〔处理〕
transp.	sewage purification

污水 净化: 50 phrases in 13 subjects

Animal husbandry	2
Architecture	1
Earth sciences	2
Ecology	4
Electronics	2
Engineering geology	1
Environment	1
Fish farming pisciculture	1
General	2
Metallurgy	1
Project management	1
Technology	28
Water resources	4