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| U/M/I queue | |||
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| U/U/I queue | |||
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| waiting line approach | |||
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排队法 : 23 phrases in 6 subjects |
| Business | 4 |
| Electronics | 3 |
| Information technology | 6 |
| Space | 3 |
| Technology | 2 |
| Telecommunications | 5 |
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