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中性密度
| 滤光片
| 中性密度 | |
| avia. | neutral density |
| 滤光片 | |
| met. | filter |
| multimed. | optical filter |
| oil | color filter |
| tech. | absorption color filter; absorption colour filter; colour absorber; colour filter; color frame |
| telecom. | color absorber |
| |||
| neutral density | |||
| 中性密度: 20 phrases in 9 subjects |
| Aviation | 6 |
| Chemistry | 2 |
| Electronics | 1 |
| Multimedia | 1 |
| Nuclear physics | 1 |
| Remote sensing | 1 |
| Technology | 6 |
| United States | 1 |
| Wind Energy | 1 |
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