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manual maintenance
busin.	人工维修

manual maintenance: 68 phrases in 17 subjects

Automobiles	4
Aviation	28
Chemistry	1
Economy	3
Electric machinery	1
Electronics	6
Exhibitions	1
General	1
Hydroelectric power stations	3
Nautical	1
Oil / petroleum	1
Project management	2
Space	2
Technology	11
Telecommunications	1
Textile industry	1
Wind Energy	1