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mil., air.def. 前后比 (ratio); 定向天线方向性比 (ratio)
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: 77 phrases in 29 subjects
Acrobatics1
Air defense4
Architecture1
Automobiles1
Aviation1
Badminton1
Bridge construction1
Business2
Clothing2
Communications1
Electric machinery1
Electronics4
Forestry1
General6
Gymnastics6
Ice hockey2
Information technology2
Mechanics1
Metallurgy2
Oil / petroleum1
Polygraphy1
Rail transport2
Rowing1
Space1
Sports1
Technology9
Telecommunications4
Textile industry13
Waterskiing4

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