1档案编号;文件编号Ref is an abbreviation for reference. It is written in front of a code at the top of business letters and documents. The code refers to a file where all the letters and documents about the same matter are kept. 档案编号;文件编号
Our Ref: JAH/JW.
我们的编号: JAH/JW。
2N-COUNT (比赛中的)裁判 The ref in a sports game, such as football or boxing, is the same as the referee. (比赛中的)裁判 [informal]