... collimator 准直仪，平行光管 collimator distance 准直距离 collimator lenses 准直透镜 ...
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source-collimator distance 焦点 ; 平行光距离
distance collimator 准直仪长度
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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