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self-purification ['selfpju(ə)rɪfɪ'keɪʃ(ə)n]
gen. 自净化 (作用)
ecol. 天然纯化; 自净
el. 自纯化
met. 自净化作用
oil 自净化
tech. 自清作用; 自净 (化); 自净作用
self purification
ecol. 自净作用河水污浊，长流自清
life.sc. 自净作用
wind. 自净作用
self-purification A natural process of organic degradation that produces nutrients utilized by autotrophic organisms ['selfpju(ə)rɪfɪ'keɪʃ(ə)n]
environ. 自我净化 (生物腐烂产生能被腐生生物利用的物质的自然过程。)
self-purification: 119 phrases in 15 subjects
Agriculture2
Chemistry1
China1
Desert science1
Earth sciences4
Ecology13
Engineering geology3
Environment3
Metallurgy1
Nursing1
Oil / petroleum4
Space5
Technology58
Textile industry1
Water resources21

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