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secondary treatment
met.	第二级处理; 二次处理; 炉外处理
oil	二级处理
plast.	后处理
secondary treatment Stage of the process of waste water treatment: following primary treatment by sedimentation, the second step in most wastewater systems in which biological organisms decompose most of the organic matter into a innocuous, stable form
environ.	二次处理 (废水处理过程：在通过沉淀处理的第一次处理之后，大多数废水处理系统的第二步是微生物把有机物分解成无害的、稳定的状态。)
English thesaurus
secondary treatment
mil., logist.	Additional or specialized medical treatment, performed in a permanent hospital formation. (FRA)

secondary treatment: 36 phrases in 7 subjects

Ecology	2
Environment	3
Metallurgy	2
Nautical	1
Oil / petroleum	1
Technology	26
Water resources	1