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空集 kōngjí
gen. null-set
math. null set
oil null set
progr. empty set
tech. empty set (合); null set (合)
telecom. void set
空集: 255 phrases in 44 subjects
Agriculture2
Air defense4
Automobiles7
Aviation43
Business7
Cables and cable production1
Commerce1
Communications1
Company name3
Computer networks1
Construction1
Cryptography1
Desert science1
Earth sciences5
Ecology4
Economy6
Electronics19
Engineering geology1
Exhibitions2
Explosives and Explosive Ordnance Disposal3
Finances1
Forestry2
General7
Information technology4
International trade4
Logistics1
Mathematics1
Metallurgy9
Nautical2
Oil / petroleum3
Pest control1
Rail transport3
Refrigeration7
Securities3
Shipbuilding1
Soil science1
Solar power3
Space28
Technology46
Telecommunications3
Textile industry4
United Kingdom2
United Nations1
United States5

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