A typical optical telescope might have a diameter a few million times the wavelength of the light it is collecting.
一个典型的光学望远镜或许有一个可以收集几百万倍光波的直径。
Optical fibres - Part 1-45: measurement methods and test procedures - Mode field diameter.
光纤。第1 - 45部分：测量方法和试验规程。模场直径。
But a single optical fiber with a diameter of less than half a millimeter can carry more information than a large cable made of copper wires.
但是只一根直径小于半毫米的光纤电缆就可以比由铜丝制成的粗电缆承载更多的信息。
Optical resolution is expressed as a ratio of the distance to the resolution spot divided by the diameter of the spot.
光分辨率是以距离到镭射点直径的比例关系来描述的。
To understand how these three ideas work together, it helps first to think about a lone nanoparticle made of some nonmagnetic material, its diameter a small fraction of an optical wavelength.
为了理解这三种想法是如何联系到一起的，可以先设想一个由非磁性材料制造的孤立的纳米微粒，其直径为光波波长的若干分之一。
Even though the bottom one takes up the least amount of space in this optical illusion, it is the flattest circle and therefore has the largest diameter.
尽管下面的圈看起来占的地方最小，但是它是最平坦的，也就是它的直径是最大的。
Plastic Optical Fibers (POF) have the advantages of low modulus, large diameter and flexibility etc. They have been widely used in our today's information society.
塑料光导纤维(POF)具有模量低、直径大、柔韧性好等优点，已经在当今信息社会获得广泛应用。
An optical fiber evanescent wave methane gas sensor based on core diameter mismatch is reported.
提出一种基于纤芯失配的光纤倏逝波甲烷传感器。
Especially now, our factory has developed a new large one-meter diameter disc, the optical glass industry to solve large-scale handicraft manufacturing problems.
特别是现在，我厂又新研制出直径一米的大磨盘，解决了光学玻璃行业制造大型工艺品的难题。
The structure, mechanism and software function of a optical rotating bar diameter measurement instrument system (ORBIS) are analyzed.
从系统结构、工作原理、软件功能等方面分析了旋转式光学线材测径系统。
This measuring system is specially designed to solve the diameter and distance of exit pupil of the gun optical sighting for some factory.
本测试系统是为解决某单位枪用光学瞄具出瞳直径、出瞳距离的测试而研制的。
Major diameter infrared optical Ge Monocrystal was developed by direct pulling method. The optical and mechanical properties were measured.
采用直拉法研制了大直径红外光学锗单晶，测量了其光学性能和力学性能。
The serial encoding method can reduce the diameter of the code disk and simplify the optical pattern, in favour of miniaturization and high precision of the absolute encoder.
与传统绝对式光学编码器相比，码盘直径小、光学图案简单，有利于绝对式编码器实现小型化和提高精度。
Polymeric optical fibers (POF) has the advantages of low modulus, large diameter and flexibility etc.
聚物光纤具有模量低、直径大、柔韧等优点。
It describes a new type of process and technological features on the lenses with big diameter that are used in the optical instruments.
就光学仪器中的大口径透镜的新式加工方法及工艺特征作了阐述。
Side glowing optical fiber is also named as cylindrical surface emission fiber, linear optical fiber, leakage optical fiber, large diameter light pipe and even called as neon optical fiber.
侧面发光光纤又称通体发光光纤、线型光纤、泄漏型光纤、大口径导光管甚至还被称为霓虹光纤等。
The principle and structure of the diameter measuring system. to which the optical imaging method is applied and the assembled CCDs are used as photoelectric detector, are presented in the paper.
本文介绍了采用光学成象法，以拼接CCD为光电接收器的外径测量系统的原理及其结构。
In this paper, the measuring method of animal fibers diameter based on auto-focus technology for optical microscope is studied.
毛绒纤维直径是评判此类纤维商业价值重要标准之一，本文主要研究基于光学显微镜自动聚焦的纤维直径测量技术。
The quantity in relation to the coupling efficiency of an optical fiber:lasing mode, divergence angle, numerical aperture, focal diameter and precision optical fiber coupler are discussed.
围绕光纤耦合效率相关的量：激光模式、发散角、数值孔径、焦斑直径、精密光纤耦合器等问题进行了讨论；
Subwavelength diameter fiber (SWDF) is a kind of optical fiber that its diameter is smaller than the wavelength propagated by it.
亚波长光纤是一种直径小于其所传输光波波长的光纤。
When the aperture diameter of an optical system is fixed with the same orbit height, the resolution of ground objects can be improved by increasing the focal length.
当光学系统口径一定时，在相同的轨道高度条件下，增大焦距可以提高地面分辨率，增大系统的视场角可以扩大对地面的覆盖宽度。
By using laser scanning and CCD sensor, a new optical technique can be applied in the production line for real-time measuring the diameter and thickness of glass tubes.
本文介绍一种激光扫描与CCD传感器的新技术，用于在线实时检测玻璃管外径与壁厚的尺寸。
This paper describes a laser scanning technique used for dynamic measurement of optical fiber diameter and a new point by point comparison-technique used for controlling optical fiber diameter.
本文介绍光纤直径动态测量中采用的激光扫描技术以及纤径控制中采用的逐点比较式新技术。
To improve measurement accuracy of thin cylinder's diameter by optical diffraction, an improved model is established with recursive method, which is more accurate.
为了提高光学衍射法细圆柱体直径测量精度，用递归法建立了更精确的改进模型。
With the development of the space optical remote sensor resolution and the primary mirror diameter, the lightweight design is becoming the key technology of the large aperture mirror.
空间光学遥感器分辨率要求的不断提高使其主镜口径也在不断增大，从而对主镜进行轻量化设计就成为空间大口径反射镜工程的关键技术。
The optical cell of supercritical fluid is designed to be small diameter cylinder to sustain high pressure, and be long to arrange the device to control temperature.
由于超临界流体温度和压力较高，用于测量其折射率的光学池需要特殊设计。
It is important to control optical fiber's surplus length and diameter in the course of optical fiber secondary coating.
在光纤二次套塑生产过程中对光纤余长和直径的控制尤为重要。
Developed the new and improved, larger capacity VT-10. Capable of handling stock up to 65mm in diameter, the turning center designed primarily for the processing of parts for optical instruments.
延伸开发新产品型号VT-10，拥有主轴通孔直径65mm，适合于光学仪器、VTR机器、OA机器、测量机器、医疗机器、汽车、航空、钟表、电脑等精密零件。
Developed the new and improved, larger capacity VT-10. Capable of handling stock up to 65mm in diameter, the turning center designed primarily for the processing of parts for optical instruments.
延伸开发新产品型号VT-10，拥有主轴通孔直径65mm，适合于光学仪器、VTR机器、OA机器、测量机器、医疗机器、汽车、航空、钟表、电脑等精密零件。
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