从折射定理出发，给出旋转双光楔的入射光线和出射光线之间的对应关系。
Starting from refraction theorem, the corresponding relation between incident light and outgoing light of the rotating double optical wedges is given.
为实现免散瞳眼底相机在被观测眼底图像较暗情况下的精确调焦，提出了双光楔裂像调焦方法。
A focusing method by adjusting two slit mark images was proposed to realize accurate focusing of a non-mydriatic fundus camera for an observed retina image in dark.
介绍了楔横轧成形工艺及其在双头呆扳手制坯上的应用，阐明了楔横轧模具的主要设计参数。
Cross wedge rolling technique is introduced in this article and this kind of technique is applied to spanner blank forming. This article shows main design parameters about cross wedge rolling die.
结果老年牙齿楔状缺损好发于第一双尖牙，且楔缺损害以盘型、2度更为常见；
Results Wedge-shaped defects in the first premolar were commonly seen in elderly patients, moreover, the disc wedge and type 2 degrees were more common in the lack of damage.
结果老年牙齿楔状缺损好发于第一双尖牙，且楔缺损害以盘型、2度更为常见；
Results Wedge-shaped defects in the first premolar were commonly seen in elderly patients, moreover, the disc wedge and type 2 degrees were more common in the lack of damage.
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