Based on the theory of diffraction, the law and phenomena of multi-slit diffraction are simulated numerically and graphically by programming technology.

依据光栅衍射理论，利用计算机的计算功能和作图功能对光的多缝衍射实验进行了模拟。

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The results of simulation analysis to single slit, aperture and multi-slits show that this method is a simple and credible way to analyze Fraunhofer diffraction in teaching.

结果显示，该方法思路清晰，结果准确可靠，可作为教学中分析夫琅禾费衍射现象的另一种有效方法。

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Introduction: Made our patent expable-tubular stainless steel material, Expable S Screen is composed of the multi-layer, whose slit size is designed based on the stratums grains.

产品简介：采用自主研发的不锈钢类膨胀管，膨胀防砂筛管由多层组成，缝隙大小可依据地层砂粒情况设计。

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