Most nuclei with spherical or nearspherical shape can grow up into spherical graphite, while nuclei with no regular shape can hardly grow.
研究了低碳球铁中球状石墨的内部结构及核心形状，探讨了核心形状对石墨球化的影响规律。
2
The results showed that the pollen shapes of all 11 cultivars were nearspherical in equatorial view. The size of pollen grain showed great variation among cultivars.
结果表明：11份花粉都呈近球形，花粉粒大小在所观察的材料间有较大差异。
3
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.