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system of classification
agric. 分类系统
sport. 成绩统计系统
tech. 分类法
system of classification: 30 phrases in 14 subjects
Agriculture2
Animal husbandry1
Computer networks1
Construction1
Desert science1
Earth sciences3
Electronics1
Geology2
Hydroelectric power stations1
International Monetary Fund2
Nautical1
Space1
Technology9
United Nations4

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