查询词典 collimation

Therefore, in order to satisfy the needs of highly accurate laser collimation, the above three error factors should be synthetically dealt with.

因此为满足高精度激光准直的需要，须对这三个误差因素作综合修正处理。

Vector expression is adopted in analyzing the relation between off-axis parabolic parameters and collimation property.

采用矢量的方法，分析了离轴量等参量和准直性能之间的关系。

To reduce these effects, the pitch should be low, and the collimation should be narrow.

为减少此二种效应，pitch要低，切片要薄。

If you then tilt the main mirror to center the beam returning to the laser, the collimation will be 1 mm off!

如果你又调整了主镜，把光束居中的话，调整后的镜子将有1mm的偏差。

Plain scan and enhanced scan were performed in these patients with Siemens 64-slice spiral CT with the following parameters: 1.0-mm section thickness,0.6-mm collimation,pitch of 1, voltage of 120Kv and tube current of 100mAs, The scanning range is from the thoracic inlet to posterior costophrenic angle; A 80-100ml dose of nonionic iodinated contrast material is injected intravenously at approximately 4-5 ml/sec.

扫描采用Siemens 64层螺旋CT；扫描参数选择层厚1 mm，准直0.6mm，螺距1，管电压120 kV，电流100 mAs；扫描范围从胸廓上口至后肋膈角；强化时对比剂为非离子型对比剂(碘海醇，350 mg I/ml)，注射流率4～5 ml/s，对比剂总量80～100 ml；采用人工智能触发扫描技术，触发点选择肺动脉主干横断层面，阈值为100 HU，触发扫描延迟时间为6 s。

It's pointed out that in the design of a weapon system, a collimating prism box should be installed behind the electro-optical instrument, if the condition is permitted, to control the electro-reticule generator or other functional elements added in the circuit, and make the weapon system realize the automatic collimation during flighting or driving.

指出在武器系统的设计中，如果条件允许，可在光电仪器的后方设置一个校准棱镜箱(或折反式自准凹面镜组件)，以便在控制电路中加入电十字线跟踪产生器等功能单元，使武器系统实现行进间或飞行中自动校准。

Nils Olof Carlin is a telescope maker and self-taught collimation expert living in southern Sweden.

尼尔斯。奥罗夫。卡林是瑞典南部一个望远镜制造者和自学成材的调校专家。

The collimation error correction and orthometric correction (altitude over more than 100 m in the examining area) must be involved in the systematic error corrections of third-order level calculation.

但是在视准轴误差方面，不管是二等或是三等水准测量，若使用电子水准仪时，则因仪器已在内建之程式中自动加入改正，换句话说，根本不需另外再改正。

As the result of theoretical analysis and practical test, the systematic error corrections of the second-order level measurement must include collimation error correction, refraction error correction and orthometric correction (altitude over more than 50 m in the examining area).

经理论分析与实际测试后发现二等水准测量须做视准轴误差、折射误差与正高改正（测区标高超过50公尺以上），而二等水准测量，则须加人视准轴误差，测区标高超过100公尺以上，亦需加人正高改正。

The optical characteristic value Sn is used to evalute intensity distribution of light scattering according to statistical point of view. Using novel semiconductor laser, fiber collimation technique and etc, laser scattering surface roughometer has been developed.

从几何光学和物理光学的观点出发，分析了光散射法测量表面粗糙度的机理，所建立的镜面模型和衍射模型说明包括中心反射光斑和其两翼散射光光能分布和表面粗糙度之间存在着定量的关系；从概率统计出发，确立以光学散射特征值Sn来作为恒量粗糙表面散射光带光能分布的依据。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。