附信 meaning in English

cover letter
covering letter

You have a further medical result . so , you are required to contact your medical doctor for further step
但我的体检医生说他一无所知.也没有附信给医生,期限只有30天,该怎办
I think you dont have to write your cover letter very long . just one page is enough . list what you have done in your college
我认为附信没有必要写得很长，一页就够了，列举一下你在大学里做了些什么。
Presenter ' s cover letter must indicate a ) which amendments , if any , have been accepted / rejected by the beneficiary b ) the date on which documents were received at their counters
交单人附信中必须指出a )信用证修改(如有)是否已被受益人接受或拒绝b )寄单银行接受单据的日期