focal造句

例句与造句

1. A typical lens has a focal length(f)of 625 mm .
   常见镜头的焦距（f）为625毫米。
2. The focal depth was about 6 mi .
   震源深度约6哩。
3. As a result, the focal lengths in these planes will be different .
   结果，这两个平面内的焦距将不同。
4. 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。
5. The baker super-schmidt camera can operate with extremely low focal ratios .
   Baker超施密特照相机则能以非常低的焦比工作。
6. It's difficult to find focal in a sentence. 用focal造句挺难的
7. The focal length of the camera lens plays an important role in photo criteria .
   摄影机镜头的焦距在摄影规范中起着重要的作用。
8. The field of view can be limited by inserting a stop in the focal plane of microscope .
   可以在显微镜的焦平面上加装一光阑，从而限制视区。
9. The unsteadiness of air becomes prohibitive only if instruments with large focal length are used .
   只有在使用长焦距的仪器时，才不允许空气的不稳定。
10. The mirror of an astronomical telescope forms at its focal point an image of a star on the axis of the mirror .
    天文望远镜把在镜轴上的星体成象在焦点上。
11. The focal length of the conelensing lens should be such that the image of the source just fills the projecting lens .
    聚光透镜的焦距应使光源的像正好照满放映透镜。
12. There are two basic types of shutters used in photographic cameras-between-the-lens and focal plane .
    摄影照相机内使用的快门有两种基本类型：透镜间快门和集平面快门。
13. Spot diameters of just a few thousands of an inch can readily be attained with convenient short focal length lenses .
    用普通的短焦距透镜不难得到直径只有几十微米的光点。
14. Hemadsorbing viruses can be titrated by counting the number of focal areas to which rbcs are absorbed .
    具有血细胞吸附力的病毒滴定，可以通过计算吸附红细胞的集中区数来完成。
15. Only the revolution actually taking place, could provide a focal point for their positive support and confidence in the people's victory .
    唯有实际发生的革命才能为他们的积极支持提供一个集中的焦点和对人民胜利的信念。
16. This is the focal and difficult point of the paper
    这部分是文章的重点和难点。
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