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joint operation
auto.	同时作业
busin.	统筹
hydroel.st.	联合运行
interntl.trade.	联合共同经营; 合作经营
navig.	联合作业
oil	合【联】营; 联营
space	联合作战
tech.	联合调度
telecom.	联合动作; 联合操作
textile	联合经营; 共同经营; 合营

joint operation: 46 phrases in 18 subjects

Air defense	7
Aviation	3
Business	7
Earth sciences	1
Economy	2
Electric machinery	1
Finances	1
General	2
International trade	2
Name of organization	1
Navigation	4
Oil / petroleum	1
Rail transport	1
Space	5
Technology	1
Textile industry	4
United Nations	1
United States	2