From the convenience of a computer, a user will be able to build a catalognumber of an RCS Rev.
从一台计算机的便利性，用户将能够建立一个RCS的牧师C组件目录号。
2
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 catalognumber as the key.
Designate the valve size and the complete catalognumber, including prefix and suffix letters, when applicable, to identify regular cataloged items as described on the following pages.