用“catalog number”造句大全，catalog number造句

You could use a List or a Map to implement the relationship; however, a Map offers the advantage that it can provide fast lookup given, say, the book catalog number as the key.

Controller catalog number

Most deep sky objects don't have a "popular name" - if we want to find them, we need to know their catalog number, or at least one of their catalog Numbers, since most objects have several.