Moire pattern caused by the cascade of periodic structures of LCD, Fresnel lens, and Lenticular lens, etc. is a key concern in designing a high quality LCD rear projection screen.
莫尔条纹是由LCD、菲涅尔透镜和微结构透镜等周期性结构的层叠引起的，对于设计高质量的LCD背投影屏幕至关重要。
The structures of common vibrating screen and cascade bar screen are illustrated, and the sifting efficiency is compared as well.
本文对比研究了普通筛面振动筛与梯流棒条筛的结构特点，并就其筛分效率做了对比研究。
The structures of common vibrating screen and cascade bar screen are illustrated, and the sifting efficiency is compared as well.
本文对比研究了普通筛面振动筛与梯流棒条筛的结构特点，并就其筛分效率做了对比研究。
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