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| For a given item of equipment, it is the average period during which this item of equipment can be used. Expressed in working unit hour, kilometer, number of shells shot or airdrops, etc., it indicates the possible life cycle, if the standard maintenance operations are indeed carried out. (FRA) | |||
| life: 23 phrases in 5 subjects |
| Abbreviation | 14 |
| Military | 4 |
| NASA | 1 |
| Non-governmental organizations | 2 |
| Religion | 2 |