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词汇
collimated light beam
释义
collimated light beam
基本
例句
平行光束
The parabolic reflector of a searchlight gives a parallel beam.
探照灯的抛物面反射镜发出平行光束。
Under astigmatism even narrow parallel light beams will not combine into one point.
有象散存在时甚至很窄的平行光束都不能会聚在一点。
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更新时间:2025/3/26 17:02:42