incoming trunk circuit

例句：

1. 1. The new router has an incoming trunk circuit that can support up to 10 Gbps.
   这款新路由器有一个支持最高10 Gbps的进线主干电路。
2. 2.The technician quickly identified the problem and replaced the faulty incoming trunk circuit.
   技术员迅速诊断出问题并更换了故障的进线主干电路。
3. 3. The company's network upgrade included expanding its incoming trunk circuit capacity.
   该公司的网络升级包括扩大其进线主干电路容量。