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| term of validity of use | |||
| 使用有效期: 15 phrases in 12 subjects |
| Automobiles | 1 |
| Aviation | 2 |
| Business | 1 |
| China | 1 |
| Drilling | 1 |
| Economy | 2 |
| Electronics | 1 |
| Oil / petroleum | 1 |
| Refrigeration | 1 |
| Space | 1 |
| Technology | 2 |
| Telecommunications | 1 |
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