... neutron beam collimation 中子束准直 Canadian Neutron Beam Centre 束中心 fixed horizontal neutron beam 固定水平中子束 ...
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为了实现工业CT系统射线源的精确定位，设计了射束中心位置测试专用装置，并开发了测试程序。
The special setting for precise positioning of the X-ray source in industrial Computed Tomography (ICT) system has been made, and the testing program has been developed.
在两线束射影对应中，当两线束中心为非固有点时，两线束的射影关系式如何确定？本文给出了适当的解析方法。
In this paper, a proper analytic methods is proposed for determining the projective formulas when their centers are improper points between two line pencils of projective correspondence.
它们将一束集中的光线反射到城镇的中心广场上，形成面积大约为600平方米的阳光区域。
They reflect a concentrated beam of light onto the town's central square, creating an area of sunlight roughly 600 square meters.
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