fax cipher unit

例句：

1. 1. The fax cipher unit was designed to encrypt messages for secure transmission.
   传真密码单元被设计来加密消息以便安全传输。
2. 2.The technician used the fax cipher unit to send a copy of the report to the headquarters.
   技术人员使用传真密码单元发送报告的副本到总部。
3. 3. The company's new fax cipher unit is expected to improve efficiency and reduce errors.
   公司的新传真密码单元预计将提高效率并减少错误。