1.The path of the Moon's umbral shadow begins in India and crosses through Nepal, Bangladesh, Bhutan, Burma, and China.
月球阴影的路径开始于印度，紧接着穿越尼泊尔，孟加拉共和国，不丹，缅甸和中国。
2.Though the umbral magnitude is small, some regions of the moon will still be visible.
虽然蚀分不大，仍可看到月球部分区域的景象。
3.Causes and Preventive Measures of Umbral Lines on Stripy Fabrics with Polyester and Cotton Blended Yarns
涤棉混纺条形织物阴纹疵点的产生原因及其预防
4.A Probabilistic Interpretation to Umbral Calculus
哑运算的概率解释
5.A note on umbral calculus
关于哑演算的一点注记