pls refer to attachment 和 pls refer to attached.这里attachment和attached不是不同性质的两个单词吗,为什么翻译出来都是附件（名词）?

Pls refer to enclose schedule pls refer to attachment 和 pls refer to attached.这里attachment和attached不是不同性质的两个单词吗,为什么翻译出来都是附件（名词）? 英语翻译原句：Would you pls take the following for reference and pls refer to my materials on last Wednesday. for c/o pls issue 421.589mt.pls refer to the attached b/l draft regsISSUE DRAFT REGS的意思 dear gu,these parts have been approved.pls refer to attached. refer to refer to refer to 英语翻译Pls refer to Chau for all admin issue.I am responsible for accounting of ITTI group.Pls let me have the approval fm management for expense reimbursement refer to 的含义 refer to 什么意思? 翻译：refer to refer to .as .是什么 refer to ,attampt是什么意思 refer to 的用法 Dear Michael,Refer attached in separate file.Pls cfm asap & adv me yr delivery address.OtherwiseDear Michael,Refer attached in separate file.Pls cfm asap & adv me yr delivery address.Otherwise I unable to issue inv to u for payment.Kindly make sure t refer to和refer to...as...的区别 refer to 麻烦问一下.