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| sikringskopi (A duplicate of a program, a disk, or data, made either for archiving purposes or for safeguarding files) | |||
| 英语 词库 | |||
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| Files, equipment, data and procedures available for use in the event of a failure or loss, if the originals are destroyed or out of service | |||
| back. | |||
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| .bak (file name extension); .bk! (file name extension, WordPerfect); .xlk (file name extension, Microsoft-Excel) | |||
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backup : 13 短语, 3 学科 |
| 微软 | 8 |
| 照明（电影院除外） | 1 |
| 电子产品 | 4 |