Abcd为一块方解石的一个截面,ab为垂直于纸面的晶体平面与纸面的交线。光轴方冋在纸面内且与ab成一锐角θ,如图所示。一束平行的单色自然光垂直 Template




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tomskiabcd为一块方解石的一个截面,ab为垂直于纸面的晶体平面与纸面的交线。光轴方冋在纸面内且与ab成一锐角θ,如图所示。一束平行的单色自然光垂直 coloring