The transmission angle is controlled by grating frequency and the diffraction efficiency is controlled by groove depth of sub-micro gratings to get uniformity of transmission filed.
亚微米光栅型导光板通过光栅空频控制出射光方向、控制槽深调节衍射效率，达到导光板出射光强的均匀性。
The characteristic of quick-return of offset double crank slider mechanism was analyzed in this paper. The synthesis method and curve of this mechanism with minimum transmission angle were presented.
本文分析偏置双曲柄滑块机构的急回运动特性，给出了按最小传动角设计偏置双曲柄滑块机构的设计方法和设计曲线。
This kind of combination mechanism is rather simple in structure, easy to design and of a big transmission Angle.
该种组合机构结构较简单，容易设计，传动角大。
This kind of combination mechanism is rather simple in structure, easy to design and of a big transmission Angle.
该种组合机构结构较简单，容易设计，传动角大。
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