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geometrical optics
| approximation
| geometric optics | |
| math. | 几何光学 |
| approximation | |
| fin. | 约计 |
| interntl.trade. | 近似数 |
| met. | 略计; 概算 |
| sport. | 接近; 近似值; 近似法 |
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| 几何光学 | |||
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| 几何光学 | |||
| English thesaurus | |||
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| GO | |||
| geometrical optics: 18 phrases in 1 subject |
| Technology | 18 |