The main circuit board for a computer.

计算机的主要电路板。

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A memory, the main circuit board from the PCB, memory particles, SPD-chip capacitance and the composition of small resistor.

一根内存，主要由PC B线路板、内存颗粒、SPD芯片和各种小电阻电容组成。

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Maintenance department: maintenance industries circuit boards, machine equipment system, main board, controller, power supply, frequency converter, PLC and touch screen.

维修部：维修各行业电路板，机加工设备系统，主板，控制器，电源，变频器，PLC触摸屏等。

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The devices are grey market add-ons that can be soldered to a console's main circuit board to bypass copyright controls.

BBC: Jail for seller of illegal Xbox chips