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，你能用以下之方程序去计算你所需之镜头的焦距。
A lens is primarily defined by its focal length. Figure 4 illustrates the relationship between the focal length of the lens, field of view, sensor size, and working distance.
一个镜头的基础定义是其焦距，图4图示出镜头焦距，视野，感应器大小，和工作距离间之关系。
Two months before he died, newspapers were reporting that he was working on a "death ray," and that he had "killed a rat with an intricate device at a distance of three feet".
在他去世的两个月前，报纸报道称他正在研究“死亡射线”，并“用一个复杂的装置在三英尺外杀死了一只老鼠”。
Measure your distance and write it down. Knowing what is working and what isn't will help you improve your technique.
测量并记录下你吐的距离。搞清楚哪些方法可行哪些不可行，才能让技术愈发娴熟。
And then, in the distance, quite a lot of people working.
然后远处却又相当多的人正在劳作，这令我们感到很疑惑。
He had a Mercury brought out of the lab, and, keeping Kearns at a distance, demonstrated to him that, as chance would have it, Ford was working on an intermittent wiper, too.
他从实验室中带来了一辆墨丘里车然后向卡恩斯展示了一番，并且告诉他福特公司也在研制类似的雨刷。
As you can tell from the cameras, the course is in fact filmed for reasons of distance education and your benefit for review; we've been working on this past summer what we dubbed cs50.
你们从大屏幕上可以看出来，该课程实际上是为远程教育拍摄的，你们能够在评论的过程中获益良多，今年夏天我们一直忙于cs50。
The effect of working parameters on the erosion performance of underwater jet is investigated, such as , simulated depth, stand off distance and exposure time.
试验研究了模拟水深、靶距及冲蚀时间对水下射流性能的影响关系，较全面地揭示了水下射流的特性。
Based on the mechanism of radio propagation, this paper builds an RFID signal loss model and calculates a safe working distance at which readers could operate simultaneously.
根据无线电波的传输机制建立起RFID系统信号损失模型，并推导出多读写器能够同时工作的安全距离。
This paper introduces the features and molds' working course of a variety of certain distance parting mechanisms.
介绍了各种定距离分型机构的特点，模具的工作过程。
Through the seismic wave exploration by us in A2 and A3 working faces, the conditions, velocity, frequency and penetrating distance of seismic wave in the main mining seams are understood preliminary.
通过在A 2、A 3两个面的槽波探测工作，初步了解了其主采煤层的槽波条件、波速、频率和槽波穿透距离。
Based on the phase distance of the tubular bus, the working field strength of the surface of the tubular bus had been calculated and the corona and the radio interference of the tubular bus had be.
根据管型母线的相间距离，计算了管型母线表面工作场强，校验了管型母线的电晕及无线电干扰。
It has to be a bigger distance, a broader abyss, and that's what Iser is working with in the passages I'm about to quote.
它必须是一个更大的距离，更宽的深渊，这就是伊瑟尔在我想引用的那些话里面所试图说明的。
Optimized result indicates that the dispersive objective based on the proposed configuration has small longitudinal aberration, a large ACA, and a long working distance.
光学优化设计表明，具有正负透镜分离结构的色散物镜可以得到低的球差和大的轴向色散，而且具有较大的工作距离。
The UHVDC power transmission possesses such advantages as high transmission capacity and long working distance, so its position can not be replaced in the electric energy flowing in the future.
特高压直流输电具有送电容量大、送电距离远等优点，在今后的能源流动中具有不可替代的地位。
The working principle of the die casting mould has been discussed, and the core pulling force, the core pulling distance and the diameter of the angle pin have been confirmed by calculation.
论述了壳体铸件压铸模工作原理，通过计算确定了抽芯力和抽芯距离以及斜销直径。
Results Has realized medical equipment working conditions functions and so on temperature long-distance monitor, warning and review.
目的实现医疗设备工作环境温度远程监测。
ZPB Remote Button Box use of far distance control start, stop, emergency stop and shut off fans & oil pumps of various kinds of electrical equipment and display working state by indicator.
ZPB遥控按钮盒供远距离控制各种电器设备的启动、正转、反转、紧急停止及风油切断等用处，并通过指示显示工作状态。
This helps set a relaxed recovery which for any distance butterfly, you want do working underwater and relaxing over the surface of the water.
这种方式可以帮助你在任何距离的蝶泳时实现轻松的移臂。你手上的劲应当使在水下，而在水面移臂时则应放松。
Short-term working duration in UK, experience traditional English culture and have zero distance contact with officers in historical universities.
短期赴英工作机会，感受正统英国文化，与历史名校的国际办公室官员面对面交流。
Featuring long working distance and excellent depth of field, it accommodates a wide variety of components for inspection.
工作距离长，景深深，可检测各种元气件。
The peak value of abutment pressures on coal pillar had a certain distance to the wall, and the distance reduced when the working face width increased.
煤柱支承压力峰值超前煤壁一定距离，且此距离随工作面长度加大而减小。
The parameters which affect the hold off voltage of the one stage pseudo spark switch such as the working gas, the pressure, the gap distance and the hole diameter of the electrodes have been studied.
对影响单级赝火花开关耐受电压的主要因素，如工作气体、气压、极间隙和孔径等进行了系统的研究。
The dome of the utility model has important significance on improving working environment of sonar and increasing working distance of sonar.
本实用新型结构的导流罩对于改善声呐工作环境，提 高声呐作用距离具有重要意义。
Working with MLM local leads, you can build trust and rapport with a prospect much quicker than if you were working from a distance.
传销与当地领导、你可以建立信任和和谐的前景非常快，如果你正在接收距离。
When you are studying or working, let your clock rung per 30minutes, which indicates that you should go away from your computer of book and look at distance place once per 30 minutes.
当你正工作或读书时，让你的闹钟30分钟响一次。用这个作暗示，30分钟内远离一次你的电脑或书向远处看。
In this paper, measures on the improvement of working life of a stamping die are put forward from the aspects of wear, distance and material selection.
分析了平衡块卡子模具磨损的方式及产生原因，从模具冲裁间隙、材质的确定及热处理工艺流程等方面提出了提高模具寿命的措施。
The "long distance" between home and working place not only wastes a lot of precious time, but also makes plenty of people want to change work.
家与工作地点之间的“漫漫征途”，不仅浪费了许多宝贵的时间，也让许多上班族想要换工作。
The "long distance" between home and working place not only wastes a lot of precious time, but also makes plenty of people want to change work.
家与工作地点之间的“漫漫征途”，不仅浪费了许多宝贵的时间，也让许多上班族想要换工作。
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