printed circuit backplane

例句：

1. 1.The printed circuit board is crucial for the electronics system's functionality.
   印刷电路板对于电子设备系统的功能至关重要。
2. 2. The engineers designed a new printed circuit board to improve the system's performance.
   工程师们设计了一个新的印刷电路板，以改善系统的性能。
3. 3.The printed circuit board was used as a platform for testing various components in the electronics system.
   印刷电路板被用作电子系统测试各种组件的平台。