由于本实验仪的光强采样部分使用了光敏阵列，从而一次采样即可得到衍射光强分布图形。
The use of photosensitive array makes it possible to obtain the distribution of diffracted light intensity with only one sampling.
基于红外发光二极管和光敏元件阵列的光电靶可以提高灵敏度，有效地增大靶面。
The photoelectric target based on LED and light sensitive element array could improve the sensitivity and enlarge the effective area.
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