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back-up system | |||
backup system | |||
stand-by system | |||
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back up system | |||
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back-up system | |||
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back-up system |
后备 系统 : 14 phrases in 8 subjects |
Aviation | 1 |
Business | 1 |
Computer networks | 1 |
Electronics | 5 |
Information technology | 3 |
Nautical | 1 |
Securities | 1 |
Technology | 1 |