On the basis of the design of backbone networks,the link topology design of computer communication networks under the constraints of all-terminal reliability was analyzed,which is an NP-hard problem.是什么意思_On the basis of the design of backbone networks,the link topology design of computer communication networks under the constraints of all-terminal reliability was analyzed,which is an NP-hard problem.在线翻译_英语_读音_用法_例句