cord system trunk board

例句：

1. 1.The new cord system trunk board is more reliable than the old one.
   新的电缆系统主干板比旧的更可靠。
2. 2.The engineer installed the cord system trunk board in the factory.
   工程师在工厂安装了电缆系统主干板。
3. 3.The cord system trunk board was used to connect the computers together.
   电缆系统主干板被用来连接电脑。