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| number; quantity; value | |||
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| f-number In photography, the diameter of the aperture expressed in terms of the focal length of the camera lens. The greater the f-number, the less light reaches the film and the more in focus the objects in the foreground and the background will be. For example, with an f-number = 16 the objects in the far background will be in focus. Whereas, with an f-number = 2 the background will be blurry (while foreground objects are in focus) (диафрагмено число) | |||
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число? : 41 短语, 13 学科 |
| 会计 | 3 |
| 农业 | 3 |
| 化学 | 5 |
| 建造 | 2 |
| 微软 | 4 |
| 技术 | 5 |
| 数学 | 1 |
| 机械工程 | 1 |
| 林业 | 3 |
| 法律 | 3 |
| 物理 | 1 |
| 自然科学 | 3 |
| 运输 | 7 |