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。
Objective: To study the manufacture of pelvic mirror physical model using rapid prototyping and the accuracy of the models.
前言： 目的：研究快速成形技术制作骨盆镜像实体模型的可行性和准确性。
Later, alpenglow also bestrews whole sky gradually, mirror on offing, accomplish an everybody to weigh strange beautiful scenery, it is the objective that painters pursue hard.
稍后，朝霞也逐渐地布满整个天空，倒映在海面上，成就一幅人人称奇的美景，它是画家们苦苦追求的目标。
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