unit connection diagram

例句：

1. 1. The unit connection diagram shows the circuit connections for each component.
   单元连接图显示了每个组件的电路连接。
2. 2. The engineer drew a detailed unit connection diagram to show the wiring layout.
   工程师绘制了一份详细的单元连接图来展示布线布局。
3. 3. The unit connection diagram is essential for troubleshooting and maintenance.
   单元连接图对于故障排查和维修至关重要。