david dunlap observatory catalogue造句
例句與造句
- An alternate designation DDO 82 is named for the David Dunlap Observatory Catalogue.
- In 1959 and 1966 staff astronomer Sidney van den Bergh composed a database of dwarf galaxies known as the David Dunlap Observatory Catalogue.
- It's difficult to find david dunlap observatory catalogue in a sentence. 用david dunlap observatory catalogue造句挺難的