p、 c.b

The printed circuit board (PCB) is the foundation of modern electronics.
印刷电路板（PCB）是现代电子设备的基础。
The technician carefully soldered the components onto the PCB.
技术员小心翼翼地将元件焊接在PCB上。
A PCB houses various electronic components like resistors, capacitors, and transistors.
PCB承载各种电子元件，如电阻器、电容器和晶体管。
The PCB design must ensure proper wiring and connectivity between components.
PCB设计必须确保各部件间的正确导线连接。
The assembly process includes cleaning the PCB before placing components.
组装过程包括在放置元件前清洁PCB。
The PCB trace width depends on the current it needs to carry.
PCB的线路宽度取决于它需要传输的电流。
PCBs are commonly used in computer motherboards and mobile devices.
PCB广泛应用于电脑主板和移动设备中。
The PCB's traces can be etched or printed, depending on the manufacturing method.
PCB的线路可以通过蚀刻或印刷，这取决于制造工艺。
PCBs often have layers for different functions, such as power and ground planes.
PCB通常有不同功能的层，如电源和接地平面。
In some cases, a multilayer PCB is necessary for complex electronic systems.
在某些情况下，多层PCB对于复杂的电子系统是必要的。