名词
中文翻译：入射角
同义词：
['incident angle', 'incidence angle']
例句：
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1. The rayof light enters the room at an incident angle.
光线以入射角进入房间。
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2. The scientist measured the angle of the sun's rays on the surface of the earth.
科学家测量了太阳光线对地球表面的角度。
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3. The engineer calculated the angle of the roof to the horizontal plane.
工程师计算了屋顶与水平面的角度。