1. 电路板：电路 Circuit Cct | 电路板 Circuit Card | 电路复原信号(TUP) Circuit Reset Signal RSC

2. 电路卡：circuit capacity 电路容量 | circuit card 电路卡 | circuit dropout 电路短暂中断

3. 赊帐卡：现金卡,现金提款卡 charge card | 赊帐卡 circuit card | 电路插件 compass card

4. 电路插件：circuit capacity == 电路能力,电路容量,线路容量 | circuit card == 电路插件 | circuit change-over control == 回線切換制御

noun

1. a printed circuit that can be inserted into expansion slots in a computer to increase the computer's capabilities

Synonym: circuit boardboardcardplug-inadd-in