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- focal center length 光心高度
- A typical lens has a focal length(f)of 625 mm. 常见镜头的焦距（f）为625毫米。
- Determine the focal length of your lens. 决定你镜头的焦距。
- C: Can I control the focal length? 我能控制焦距吗?
- What is the best focal length for bird photography? 拍摄鸟儿最适合的焦距长度是多少?
- A center of activity or interest;a focal point. 中心；焦点活动或兴趣之中心；焦点
- A center of activity or interest; a focal point. 中心;焦点:活动或兴趣之中心;
- He moved the table over to the center of the room. 他把桌子移到房间中心。
- The focal point of our discussion was the need for action. 我们讨论的中心是采取行动的必要性。
- The land is destined for a new shopping center. 这块地已被划作为营建一个新购物中心之用。
- His activities in London center around this spot. 他在伦敦的活动以这个地点为中心。
- The focal length of a given lens is different for different colors. 一个特定的透镜的焦距因颜色的不同而不同。
- The strikers paraded through the city center. 罢工队伍游行穿过市中心。
- The focal length is set to Flat stitch in the Properties window. 焦距在特性窗囗中被设定成平坦的一针。
- A system of roads radiates from the town center. 一个道路网从镇中心向四面八方伸展出去。
- This photogragh is shot by lens with a long focal length. 这张照片是用长镜头拍摄的。
- The new hospital will be sited at the city center. 新医院将座落在市中心。
- New York is a great financial center. 纽约是一个重要的金融中心。
- The center of the sun is exceedingly hot. 太阳的中心极其热。
- Our city is the industry center of the country. 我们城市是全国的工业中心。
