Chip and PIN is great, but there are some operational issues with it.
芯片密码技术很棒，但是它存在一些操作上的问题。
In operational research, issues of transportation and assignment have extensive application.
运筹学中的运输、指派问题具有广泛的应用性。
In operational research, issues of transportation and assignment have extensive application.
运筹学中的运输、指派问题具有广泛的应用性。
应用推荐