合理使用球面棱镜及其组合可以使光电仪器尺寸小、重量轻、元件少、结构紧凑、成像质量好。
Reasonably using a sphere-prism and its combination, optical system is changed small size, less weight, few element, compact structure and better imaginary quality.
运用球面图法及平面三角法，计算了三种组合夹具实例的空间角度及空间点的坐标。
By means of spherical graphics and plane trigonometry, space angle and space point coodinates are calcullated for three sets of combined fixtures as examples.
建立了球面四杆机构的尺寸组合与空间模型上点之间的对应关系，进而讨论了球面四杆机构的尺寸型。
The relationships between the points in space model and the dimensional classification of spherical four-bar linkage are also established.
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