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中央局 zhōngyāngjú
el. central office
中央电话
tech. central office
中央 局
: 71 phrases in 17 subjects
Air defense1
Aviation3
Business1
China6
Construction1
Earth sciences13
Economy2
Electronics10
General13
Metallurgy1
Name of organization1
Oil / petroleum1
Space7
Statistics3
Technology6
Thermal engineering1
United States1