The relationship of position dimension and optical system is analyed, the relationship of angle for PSD and optical axis, and especial instances are discussed. The relationship of position between the inferior piriform recess and vertebral was measured through X-ray film. 深入研究了基于PSD的测距原理,分析了位置尺寸与光学系统参数之间的关系、PSD与光轴夹角的关系并讨论了特殊情况。
The influence of the geometry structure on the bearing performance was studied on a novel spiral oil wedge hybrid journal bearing, the geometry structures include the helix angle of the oil recess, depth of the oil recess and the wrap angle of the oil recess. 针对一种新型的螺旋油楔动静压滑动轴承,研究了油腔螺旋角、油腔深度以及油腔包角等油腔结构对该新型轴承静态性能的影响。