本文通过光栅衍射给出了用最小偏向角测光波波长的方法。
The paper proposes a method of measuring wave length of light wave by using minimum deviation angle based on raster.
使用新的测量最小偏向角的方法方便了实验操作，提高了测量的准确度。
The method to use new minimum Angle of deflection of measurement has helped the experiment operate, and improved the accuracy measured.
借助高精度的测角仪器，就可测量棱镜的顶角和最小偏向角，从而得到光学玻璃的折射率。
With the help of a precise angle-measuring device, the apex Angle and the minimum deviation Angle of the prism can be measured; hence the optical refractive index of the glass.
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