collimator
英
美
n. 准直仪（器；管）；照准（视准，光轴）仪；平行光管
COCA.43557
英英释义
noun
- 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
- a small telescope attached to a large telescope to use in setting the line of the larger one
双语例句
- 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。 - 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，研究了多针孔准直器与单针孔准直器对探测效率的影响。 - Optical Design of the Reflective Eccentric-pupil Collimator with Large-aperture and Long Focal Length
大口径、长焦距平行光管装调技术研究大口径长焦距反射式偏瞳平行光管光学设计 - A kind of infrared collimator which is made up of off-axis parabolic mirror and reflecting mirror is described in this paper.
文章阐述了一种由离轴抛物面反射镜和平面反射镜组成的红外平行光管，然后从两个方面对这种红外平行光管进行了详尽的分析。 - With a collimator and a23 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。 - Quality control for multileaf collimator leaf position accuracy using amorphous silicon electronic portal imaging devices
利用非晶硅电子射野影像系统对多叶准直器叶片到位精度作质量控制 - Describes the working principle of the multi-leaf collimator of Siemens linear accelerator and two cases of troubleshooting for the common malfunction.
主要介绍了西门子直线加速器多叶光阑的工作原理和两例常见故障的分析与排除。 - Their neutron lux and neutron angle-distributing of horizontal and vertical plane at the exits of collimator were compared at same input condition.
比较了这三种不同准直器在输入条件相同的情况下，它们出口处的中子注量率、水平面和竖直面的中子角分布。 - The Project Management on the Technical Innovations of Special Lens Series and Night-vision Collimator with the National Debts; Or I swivel the monitor to an advantageous angle and shoot with only the lens pointing at the subject.
特种镜头系列及夜视瞄准镜国债技改项目管理或者，我会把显示器调整到一个有利的拍摄角度，镜头对准目标进行拍摄。 - Application of Large-Aperture Collimator in Optical Axis Parallelism Measurement
大口径平行光管在多光轴探测器光轴平行性测量中的应用