主板是电脑中主要的电路板，其上安有处理器、内存和扩展槽，并直接或间接地与电脑各个部件相连。
Motherboard is the main computer circuit inside the PC, which holds the processor, memory and expansion slots, and connects directly or indirectly to every part of the PC.
搭接片，连接某个部件与飞机结构以形成接地的电接头。
BONDING JUMPER, an electrical connection between a component and airplane structure for electrical grounding.
开始任何工作之前，必须检查断开的部件是否带电及接地或短接，除与绝缘体相邻的元、组件外。
Before starting any work, check the de-energized parts for presence of power and ground or short-circuit them in addition to insulating adjacent live parts and elements.
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