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| zoom lens; varifocal lens | |||
| pancratic lens | |||
| multifocal lens; varifocus lens | |||
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| zoom | |||
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| variable focus lens | |||
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变焦 透 镜 : 20 phrases in 8 subjects |
| Agriculture | 1 |
| Aviation | 2 |
| Business | 1 |
| Cultural studies | 1 |
| Electronics | 2 |
| General | 1 |
| Optics branch of physics | 1 |
| Technology | 11 |
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