a small telescope attached to a large telescope to use in setting the line of the larger one
optical device consisting of a tube containing a convex achromatic lens at one end and a slit at the other with the slit at the focus of the lens; light rays leave the slit as a parallel beam
双语例句
1. Sight or collimator with bracket.
瞄准或用支架描准仪。
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2. The collimator lighting remains also switched on.
准直仪照明仍然保持开启。
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3. One problem is simply the design of the collimator and condenser.
第一个问题仅是准直镜和聚光镜的设计。
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4. Purpose to study the clinical applying value of multi-leaf collimator.
目的：研究多叶准直器在临床的应用价值。
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5. In this paper, a measuring method of convex lens foci in collimator is given.
介绍一种测量平行光管内凸透镜焦距的测量方法。
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6. The collimator is an important equipment for optical experiment and standardization.
平行光管是光学实验及计量检测的重要设备。
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7. The method is recounted for determining and correcting the error with the axis-collimator.
详细叙述了用轴准直器测定和修正这种影响的方法；
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8. Photoelectric collimator is a kind of simple fire-control system equipped on a weapon system.
光电瞄具是配备于某武器系统上的一种简易火控系统。
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9. Structure and working principle of multi leaf collimator for radiation therapy are introduced.
简述了医学辐射治疗用自动多叶光栅控制系统的设计与实现。
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10. The system consists of PSD, laser vertical collimator, data sampling box and application software.
该系统包括PSD，激光垂直准直器，数据采集箱和应用软件四个部分。
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11. The portable laser collimator and the straightness measuring and evaluating software are developed.
开发了便携式激光准直仪及直线度误差测量、评定软件。
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12. The simplest approach to radiosurgery is to use a single, fixed collimator to shape the treatment field.
对于放射外科来说，塑造治疗射野最简单的方法是采用单一、固定的准直器。
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13. The efficiency of single-pinhole and multi-pinhole collimator is compared based on a imaging geometric model.
在成像几何模型的基础上，通过分析和计算，研究了。
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14. The alternative approach is to switch one collimator for another midway through treatment, altering the field size.
另一种可供选用的方法是在治疗过程中通过更换不同类型的准直器来改变射野大小。
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15. Focusing collimators were used instead of single collimator to increase the scattering photon flux received by detector.
提出利用聚焦准直器代替单个准直器以达到增大探测器接收到的散射光子通量的目的。
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16. The dynamic object should arrive at the view field of the collimator in the camera exposure time to simulate infinity object.
在相机拍照曝光时间内，尺形分辨率板运动至平行光管的视场内，以模拟无限远动态目标。
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17. During the design process of Blu-ray disc optical pick-up, the optical system and the collimator lens design is especially important.
在蓝光光盘光学头设计过程中，光学系统的设计，有举足轻重的作用，特别是准直镜的设计。
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18. Firstly, this paper introduces the principle of photoelectric collimator, and then brings out a principle of design for the simulator.
文中首先介绍了光电瞄具的工作原理，然后给出了一种针对光电瞄具系统的光电瞄具模拟训练器的设计原理。
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19. Using the collimator the theory and test results of the transfer of the measurement scale of solar radiation is reported in this paper.
本文报道了采用准直光阑传递太阳辐射测量标尺的理论及实验结果。
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20. This sensor featuring plane-convex lens collimator for expanding beam and coupling, and a low frequency for light pulse modulation is introduced.
利用平-凸透镜准直器作扩束耦合光学系统，采用低频斩光器实现光调制。
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21. The laser collimator not only has the advantages of existing ones, but also can be used to measure wavefront error with high accuracy interferometer.
此激光平行光管具有以前平行光管的优点，且可以与数字相移干涉仪对接，直接进行波前误差的高精度测量。
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22. The theory and testing methods for single-mode agonic fiber optic collimator are introduced and some fabrication processes are discussed and compared.
介绍了单模无偏准直器的原理与测试方法，并对一些制作工艺进行了讨论和比较。
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23. The result proves that the efficiency of multi-pin-hole collimator is indeed higher than that of single-pinhole collimator for our hypothetical model.
结果表明，所假设模型基础上，多针孔成像确实在一定程度上要比单针孔成像探测效率高。
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24. Four interchangeable outer collimator helmets with beam channel diameters of 4, 8, 14, and 18 mm are available for irradiating different size volumes.
25. The influence of imaging magnification and the ratio of object dimension to object-to-collimator distance on imaging efficiency was investigated as well.
最后还分析了放大倍数以及物体尺寸相对于物距的大小对探测效率的影响。
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26. A type of structure of optical fiber collimator and its technology are provided, and Infrared Parallel Detector for the device is developed in this paper.
提出了一种光纤准直器件的结构及其主要工艺，并研制出红外平行光检测仪。
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27. With a collimator and a 23 polyhedron as measuring datum, a set of optical angular encoder measuring data, which containing the eccentricity error, was obtained.
以平行光管和23面棱体为基准，得到存在偏心误差的一组光栅角编码器测量数据。
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28. The instrument USES an adjustable diaphragm blackbody radiator and a reflecting collimator to simulate objects with various size, range and radiation characters.
29. The commutation rule and the optimal collimation area are analyzed when Gauss light beam passes thin lens, and the design principles of the collimator are given.
30. Firstly, a telescope system is made up with a concave lens and a long-focus convex lens, by which the angle of the parallel beam from the collimator can be change.
该方法借助一个焦距较长的凸透镜与被测凹透镜组成无焦系统，可以使准直管出射光束的张角发生改变；
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用作名词 (n.)
The collimator lighting remains also switched on. 准直仪照明仍然保持开启。
The Collimator projects a reticle to infinity. 准直仪将十字线投射到无穷远。
