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| pipe go-devil | |||
| pipe cleaner | |||
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通 管器 : 36 phrases in 11 subjects |
| Air defense | 1 |
| Aviation | 4 |
| Computer networks | 1 |
| Cryptography | 1 |
| Electronics | 6 |
| General | 1 |
| Information technology | 1 |
| Oil / petroleum | 2 |
| Project management | 2 |
| Technology | 16 |
| Telecommunications | 1 |
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