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negative element
met. 负电性元素; 阴性元素
oil 负向构造单位; 下降构造单元
tech. 负元素; 负向地貌要素; 凹下部分
wushu. ;
negative element: 10 phrases in 8 subjects
Aviation1
Business1
Electronics3
General1
Genetics1
Geophysics1
Information technology1
Space1