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purification water
tech. 净化水; 净水
purification water
: 97 phrases in 19 subjects
Agriculture1
Automobiles2
Chemistry1
Earth sciences2
Ecology6
Electronics5
Engineering geology3
Environment3
Genetics1
Hydroelectric power stations3
Metallurgy1
Nuclear and fusion power1
Oil / petroleum1
Shipbuilding1
Space1
Technology52
Textile industry1
United Nations2
Water resources10

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