某同学用圆柱形玻璃砖做测定玻璃折射率的实验.先在白纸上放好圆柱形玻璃砖在玻璃砖的一侧插上两枚大头针p1和p2然后在圆柱形玻璃砖另一侧观察 Template




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tomski某同学用圆柱形玻璃砖做测定玻璃折射率的实验.先在白纸上放好圆柱形玻璃砖在玻璃砖的一侧插上两枚大头针p1和p2然后在圆柱形玻璃砖另一侧观察 coloring