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％）。

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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。

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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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Spherical video cameras record 360-degree views of the 17, 000-student school.

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