non-scheduled maintenance 非正规维修 scheduled and preventive maintenance 计划预防修 scheduled maintenance inspection 定期维修检查 ..
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you will come back to me 计划预防修 » Plan to prevent repair 他问我是否第二天出发? » He asked whether I second days do embark?
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计划预防维修制 [科技] planned-preventive maintenance system
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