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| collimated light beam | |||
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| collimated beam | |||
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| collimated beam | |||
| 准直 束: 26 phrases in 9 subjects |
| Aviation | 1 |
| Construction | 1 |
| Electronics | 5 |
| Metallurgy | 6 |
| Oil / petroleum | 3 |
| Space | 1 |
| Technology | 5 |
| Telecommunications | 2 |
| Ultrasound | 2 |
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