如图所示oo′是半圆柱形玻璃体的对称面和纸面的交线ab是关于oo′轴等距离且平行的两束不同单色细光束从玻璃射出后相交于oo′下方的p点 Template




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tomski如图所示oo′是半圆柱形玻璃体的对称面和纸面的交线ab是关于oo′轴等距离且平行的两束不同单色细光束从玻璃射出后相交于oo′下方的p点 coloring