... epicentre distance 震中距 focal distance 震源距，焦距 Hamming distance 汉明间距[纠错能力量度]，代码间距 ...
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flange focal distance 镜座距 ; 基面载距 ; 法兰焦距 ; 物镜定位截距
back focal distance 后焦距 ; 后退聚焦距离 ; 后截距 ; 后视图
Near focal distance 近焦距离
front vertex focal distance 前顶焦距 ; 前顶点焦距 ; 前表面镜
focal distance of objective 物镜焦距
Active Hyper-focal Distance 动超焦距系统 ; 款采用主动超焦距系统
A kind of new way to measure optical system focal distance automatically is proposed, which is based on CCD optical-electrical method and digital image processing method.
提出了一种基于CCD光电法和数字图像处理方法自动测量光学系统焦距的新方法。
参考来源 - 基于CCD的光学系统焦距自动测量技术Met down does the further research regarding the flaw examination radio station and the repair radio station to indicate the different cutting focal distance with cut the energy all to have the different effect regarding the repair different flaw.
接下来对于点缺陷的检验机台及其修复机台作了进一步的研究表明不同切割焦距与切割能量对于修复不同的缺陷都有不同的效果。
参考来源 - TFT·2,447,543篇论文数据，部分数据来源于NoteExpress
N 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 焦距
Based on Lau effect in double grating, the focal distance of lens is measured.
根据计量光栅的特点，可以利用双光栅效应测量透镜焦距。
But only with the right focal distance and correct aperture could we get the true pictures.
只有我们调对了焦距，对准了光圈，才有可能得到真实的图像。
This may avoid remedy mistake because of the actual different focal distance brings from AS function.
这样可以避免AS功能启动是由于实际的焦距不同带来的矫正错误。
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