双楔翼形 double wedge airfoil
四方双楔组 tetragonal-disphenoidal class ; disphenoidal class
菱方双楔组 rhombic-disphenoidal class ; disphenoidal class
斜方双楔 rhombic disphenoid
斜方双楔形半面像 rhombic sphenoidal hemihedry
双楔翼型 double wedge airfoils
斜方双楔体类 rhombic disphenoidal class
双楔式切挖 [矿业] double-wedge cut
双楔顶梁 two melt top bridges
正方双楔体晶族 tetragonal disphenoidal class
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.
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