Particle system based on GPU to simulate rain and snow is widely used in virtual scene simulation for its high efficiency.
在虚拟场景中采用基于GPU的粒子系统来模拟雨雪，因其效率较高，得到了广泛的应用。
Natural landscape can increase the reality of virtual reality. They can be realized by particle system, such as rain, snow, fountain and so on.
自然景观可视化可以增加虚拟现实的逼真效果，像雨雪、瀑布这类自然景观的可视化通常采用粒子系统来实现。
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