某光栅条纹密度为每lmm刻100条,光栅条纹的夹角 为0.005弧度,则莫尔条纹的宽度W为()
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
某光栅条纹密度是100条/mm,光栅条纹间夹角θ=0.001孤度,则莫尔条纹的宽度是( )。
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