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non-scheduled maintenance; unscheduled maintenance (美国空军用语,指不在计划之内,不是预防性的维修,例如排除故障,发动机提前更换) | |||
unscheduled maintenance | |||
nonscheduled maintenance |
非预定 维修 : 4 phrases in 4 subjects |
Aviation | 1 |
Information technology | 1 |
Metallurgy | 1 |
Telecommunications | 1 |