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to phrases
自净作用
archit.
auto purification
desert.
autopurification
tech.
effect of self-purification
;
self-purification
wind.
natural purification
;
self purification
自净作用
河水污浊,长流自清
ecol.
self purification
自净
化
作用
met.
self-purification
自净作用
:
41 phrases
in 9 subjects
Agriculture
2
Earth sciences
2
Ecology
3
Environment
2
Nursing
1
Oil / petroleum
2
Space
4
Technology
14
Water resources
11
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