由于地球的球面形状，在至日突出的表面阻挡了阳光照射照远端的半球；同样是球面的原因，在至日阳光可以照射两极的更多地方。
The bulge of our spherical Earth blocks sunlight from the far hemisphere at the solstices; that same curvature allows the sun's rays to spread over more area near the top and bottom of the globe.
目的研究凹球面超声换能器的声焦域在高声强和媒质有较大衰减情况下，其形状和几何位置的变化。
Objective the variations of the site and shape of focal region for a concave spherical ultrasound transducer in the case of high sound intensity and stronger attenuation were studied.
本文讨论球面范成法成形的一般原理，分析和计算范成表面的形状偏差，给出若干数据和结果。
The general principle of the precise spherical generation is discussed. The deviation of the resulting surface shape is analysed and calculated. Some data and results are given.
圆锥滚子在和内圈大挡边接触的地方有一个稍带球面的形状。
The roller is tapered, has a somewhat spherical shape and when assembled fits against the large rib of the cone.
对不同材料、不同厚度的圆柱面、球面及马鞍面三种典型形状的成形力进行了数值模拟，分析了成形力的变化过程及影响因素。
The forming forces for three typical shapes, i. e. cylindrical, spherical, and saddle surface of different materials with different thickness were simulated.
描述了一种在超精密磨削机床上基于误差分离法的非球面表面形状精密测量系统。
This paper describes accurate surface profile measurement of an aspherical lens on an ultra-precision grinding machine using the error separation technique.
可一次加工完成各钟不规则形状、球面、曲面。
Able to make irregular shape, sphere and curve in shape in one time process.
球面离散格网模型单元的面积、形状是否相似关系到模型的精度，因此定量分析单元的几何变形、分布规律等是格网模型建模的重要组成部分。
Whether the area and the shape of the discrete global grids model units are similar to each other affects the precision of the model.
通过弦长分布、紧凑度、面积等指数， 将该模型与SQT，QTM，ISEA等已知球面剖分模型进行了面积和形状特性方面的比较分析。
The partition model is compared with several famous models such as SQT, QTM and ISEA by the indices, including distribution of chords, compaction, and area.
最后，对球面的形成原理及异常焦斑形状作了讨论。
Finally some discussions on the spherical formation theory and the focal point images are...
最后，对球面的形成原理及异常焦斑形状作了讨论。
Finally some discussions on the spherical formation theory and the focal point images are...
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