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primary treatment
agric.	初次处理｛种子｝
el.	预处理
met.	初步处理
oil	初级处理; 一级处理
space	一［初］级处理
tech.	一次处理
primary treatment Removal of floating solids and suspended solids, both fine and coarse, from raw sewage
environ.	初级处理 (粗糙的、浮动的固体和暂时的固体去除。)
English thesaurus
primary treatment
mil., logist.	The required minimal treatment given to a wounded to ensure his survival, performed by a first level surgical element in the time left before an operation. (FRA)

primary treatment: 26 phrases in 7 subjects

Automobiles	1
Engineering geology	1
Environment	3
Rail transport	3
Technology	14
Textile industry	1
Water resources	3