用“umbra”造句大全，umbra造句

2、umbra and penumbra of sunspot

5、This includes the continuous survey of umbra and penumbra of the sunspot.

1、last contact of umbra

6、Partial solar eclipses occur when the Moon's penumbra touches Earth; partial lunar eclipses occur when the only part of the Moon passes through Earth's umbra.

4、This is a lighter area between the umbra and the edge of a shadow.

7、During the eclipse, the best viewing in North America found the coppery lunar disc high in a cold winter sky, the Moon reddened by light filtering into the Earth's dark central shadow or umbra.

3、a fringe region of partial shadow around an umbra.