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constant ratios
securit. 固定比率
constant ratio
bridg.constr. 常量比
busin. 固定比率
constant ratios: 30 phrases in 15 subjects
Air defense2
Automobiles1
Aviation2
Business2
Economy1
Electronics2
Engineering geology2
General3
Information technology1
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Rail transport2
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Technology8
Telecommunications1
Wind Energy1