| 释义 |
〔Sitter〕Dutch astronomer noted for his work on cosmology and relativity.德西特,威廉·德:(1872-1934) 荷兰天文学家,以其在宇宙学和相对论方面的工作而著名〔cosmology〕The study of the physical universe considered as a totality of phenomena in time and space.宇宙学:把有形的宇宙当做时空中的各种现象的总和来研究的科学 |