求翻译：4) 每一个POST设备都被分配一个独特的设备标识号。票务系统中心应设有对设备标识号进行登记的功能，以便日后进行认证和交易验证操作。是什么意思？

4) Each post equipment is assigned a unique device identification number. The ticketing system center has registered on the equipment identification number for future authentication and transaction verification operation.

正在翻译，请等待...

4) Each POST equipment is assigned all a unique equipment marking number.The ticket clerk system center should be equipped with to the equipment marking number carries on the registration the function, in order to carry on the authentication and the transaction confirmation operation in the future.