focal length

音标发音

• 英式音标 [ˌfəʊ.kəl ˈleŋθ]
• 美式音标 [ˌfoʊ.kəl ˈleŋθ]
• 英式发音
• 美式发音

基本解释

• [光][摄] 焦距

同根派生

英汉例句

双语例句

• The focal length you need depends on your distance from the burst and what you’re trying to capture.
  你所需要的焦距取决于你和被拍摄焰火间的距离，以及你想捕捉到怎样的画面。
• You also lose the focal length 'boost' offered by smaller sensor cameras when shooting with telephotos.
  同时在摄远时长焦镜头给更小画幅相机带来的冲击力也会随之消失。
• What excites ophthalmologists most, and what every lens-making company wants to achieve, is an “accommodating” lens that can change its focal length in the same way that a natural lens does.
  最让眼科学家兴奋的，而且每一家人工晶体制造公司都想获得的，是一种“善于适应新环境的”晶体，能像天然的晶体一样改变它的焦距。

权威例句

• The high-end Schneider lens offers a 24mm, ultra-wide focal length and 3x optical zoom.
  ENGADGET: Samsung's PMA gifts: HD pocket camcorders, point-and-shoots with AMOLED screens
• Using a lens with too long a focal length, for instance, makes the image appear flat.
  ECONOMIST: Animation takes on a whole new reality
• This camera differs from the DP2 Merrill, which was released in June, due to its wider focal length.
  ENGADGET: Sigma finally announces price and availability for DP1 Merrill compact

词组短语

短语

• Focal distance length 焦距长度
• Focal -Length 焦距
• focal l length 焦距;镜头焦距
• focal l length ratio 焦距比
• focal l length gauge 焦距计

英英字典

剑桥英英字典

• the distance between a point where waves of light meet and the centre of a lens

柯林斯英英字典

• the distance from the focal point of a lens or mirror to the reflecting surface of the mirror or the centre point of the lens

专业释义

计算机科学技术

• 焦距

  A new method of measuring telephoto lens focal length is presented in this paper.
  提出一种新的测量长焦透镜焦距的方法。

• 焦长度
• 焦长

机械工程

• 焦距

  Using Gradual Aberration optimization Method, a 6m focal length, 600mm aperture off-axis aspherical optical system is successfully aligned.
  采用像差逐项优化法,成功地装调了焦距为6m 口径600 mm 的离轴三反镜光学系统。

• 焦点距离
• 焦

地球科学

• 震源距

电子、通信与自动控制技术

• 焦距

测绘科学技术

• 焦距