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Terms for subject Aviation containing operating hours | all forms | exact matches only | in specified order only
| English | Chinese |
| boot removals and boots operating hours | 气囊移除与操作时间 |
| maintenance man-hours/operating hours | 维修工时/操作小时 |
| maximum operating hours | 最多操作时间 |
| operating hours counter | 使用小时记数器 |