call relay meaning in English

呼叫继电器

Fnc sends service request packets to so called relay nodes of the founded candidate nodes instead of to the candidate nodes themselves . bsu replaces several unicast request packets sent by one node with a broadcasted request packet enclosing the receivers of those unicast packets
转发节点集中技术用所谓的转发节点代替候选节点作为服务需求包的转发目标,而单播通信广播模拟技术把多个以单播方式发送给不同接收节点的信息包用一个以广播方式发送的信息包来代替。