当把光传入油层后，就被约束在那里，光线在金属和空气的边界之间不断反弹，于是产生了喇叭状的辉光(见图片)。
Light sent into the oil layer was confined there, bouncing between the metal and air boundaries. The beam spread out ever more quickly, generating a trumpet-shaped glow (see image).
处理出口边界的一个有效的方案开发，由于粒子平衡分布函数和非平衡反弹方法的本质。
An efficient scheme to deal with the outlet boundary is developed due to the particle equilibrium distribution function and the essence of non-equilibrium bounce-back method.
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