backplane

例句：

1. 1.The engineers were working on the back plane of the new car.
   工程师们在新汽车的后部工作。
2. 2. The back plane of the aircraft is where most of the systems are located.
   飞机的背部是大多数系统所在的地方。
3. 3. The back plane of the computer has a large number of circuits and components.
   计算机的背部有许多电路和组件。