这束平行光的直边衍射花纹与光斑本底叠加的结果在观察屏上形成为通常所称的M线。
The straight-edge diffraction of this parallel beam superposing on the light spot constitutes the so-called M-line.
这束平行光的直边衍射花纹与光斑本底叠加的结果在观察屏上形成为通常所称的M线。
The straight-edge diffraction of this parallel beam superposing on the light spot constitutes the so-called M-line.
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