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词语焦距拆分为汉字：
焦字的拼音、笔画、偏旁部首、笔顺、繁体字，焦字字源来历，焦字演变
物体经火烧变成黑黄色并发硬、发脆：烧～。～土。～头烂额。烦躁，着急：～急。～虑。～灼。～躁不安。酥，脆：～脆。～枣。喻干燥到极点：唇～口燥。～枯。～裂。～渴。一种质硬、多孔、发热量高的固体燃料：～炭。～煤。～炼。姓。……
距字的拼音、笔画、偏旁部首、笔顺、繁体字，距字字源来历，距字演变
相隔的空间和时间：相～数里。～离。行（háng ）～。株～。差（chā）～。雄鸡爪子后面突出像脚趾的部分。古同“拒”，抵抗。古同“巨”，大。古同“讵”，岂。……
汉语拼音：jiāo jù
In measuring the focal distance of lens, the experimental accuracy is often affected by the poor quality in the formation of images.
在测量透镜焦距时，往往由于成像质量差而影响实验的精度。He took a deep breath and stared, unseeingly, at the ground for a long moment.
他重重喘了口气低头盯着，却毫无焦距的，盯着地面好一阵子。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。Use angle encoder calibration coefficient of deviation of the long focal length of high-precision tracking system was satisfactory results.
利用编码器标定角偏差系数的方法，在长焦距高精度跟踪系统中获得了满意的效果。Objective and the focal length of the specimen to be measured. The measurement of the size of the reticle.
十字线的像的尺寸取决于准直仪物镜的焦距和待测样品的焦距。I didn't have to set the focus as I had a wide-angle lens; I knew, so long as I had the right exposure, the depth of field was enough.
我无需调整焦距，因为我用的是广角镜头；我知道，只要使用正确的曝光组合，便能得到足够的景深。To determine power, divide the focal length of the telescope (in mm) by the focal length of the eyepiece (in mm).
将望远镜的焦距（单位：mm）除以目镜的焦距（单位：mm），就可以得到望远镜的放大率。The focal length of the condensing 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。If you know the FOV, sensor size, and working distance, you can compute the focal length of the lens you need using the following formula.
如果你知道视野FOV，感应器大小，和工作距离，你能用以下之方程式去计算你所需之镜头的焦距。