An analytical expression for spot moving speed on the former vibrating mirror of the polygonal mirror scanning system objective is derived from geometrical optical principle.

根据几何光学原理，推导出转镜-振镜扫描系统物镜前振镜上光斑移动速度的解析表达式。

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Based on the deployable structure of a mirror and the operation principle, the finite element method was used to analyze the unit naked mirror and some different mirror support schemes.

基于展开镜结构工作原理，运用有限元方法分析了展开式反射镜单元的裸镜及其支撑方案。

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This paper introduces the theoretic diagram for the control circuit of electric rearview mirror on Guangzhou HONDA ACCORD, analyses its working principle and fault removing.

介绍广州本田雅阁轿车电动后视镜控制电路的原理图，分析电路的工作原理及故障排除。

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And so when it's all said and done, Ed, when you ever come down and visit the old, old tired me down there in Crawford, I will be able to say I looked in the mirror and made decisions based upon principle, not based upon politics.

NPR: Bush Defiant, But Restrained With Press

As well as Conservatives who want Leveson, there are Liberal Democrat and Labour MPs who oppose statutory regulation in principle - Labour's Sir Gerald Kaufman, for example is an ex-Mirror journalist and is vehemently against any scintilla of statutory regulation.

BBC: Week ahead