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。
Finally, take a kind of two-looped spherical mechanism with a single degree of freedom as an example the condition of complete balance of its swinging force was derived.
最后以一种单自由度两环球面机构为例，导出了其摆动力完全平衡条件。
No statistic difference was found in refractive status, i. e. spherical, cylindrical and spherical equivalent degree among three groups;
屈光状态，即球镜度数、柱镜度数、等效球镜三组差异无统计学意义；
The plane, the surface, the spherical surface, the heterogeneous surface, 360 degree entire circumference surface may process.
平面、曲面、球面、异型面、360度全圆周面均可加工。
This paper presents a kind of non-spherical two-degree-of-freedom motor.
针对化工不稳定时滞过程，提出一种两自由度控制结构。
This paper presents a kind of non-spherical two-degree-of-freedom motor.
针对化工不稳定时滞过程，提出一种两自由度控制结构。
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