During development there was decrease in the degree of hypermetropia of increase in the degree of myopia (75% ) on the major spherical changes of all cases.
全部病例球镜的主要变化为远视度数减少或近视度数增加（75％）。
The easy and correct theoretical calculating formula is provided for calculating degree of freedom of planar and spherical mechanism.
为计算平面、球面机构与结构自由度提供了更为方便快捷正确的理论计算式。
Panoramic images, varying according to projection models, can generally be divided into polyhedral panoramic images, spherical panoramic images and 360-degree panoramic cylinders.
全景图像根据投影模型的不同，一般可以分为多面体全景图像、球面全景图像和360度柱面全景。
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