半径为r的半圆柱形玻璃砖的截面如图所示o为圆心光线Ⅰ沿半径方�从a点射入玻璃砖后恰好在o点�生全反射另一条光线Ⅱ平行于光线Ⅰ从最高点b Template




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tomski半径为r的半圆柱形玻璃砖的截面如图所示o为圆心光线Ⅰ沿半径方�从a点射入玻璃砖后恰好在o点�生全反射另一条光线Ⅱ平行于光线Ⅰ从最高点b coloring