1. 线路板：(飞机上)限制其使用小时的部件life-limited parts | 线路板 circuit board | 相似性similarity

2. (实验用)电路板：circuit angle || 变流器相位角 | circuit board || (实验用)电路板 | circuit breaker cylinder || 断路器缸

1. 七彩网.英语单词

noun

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

Synonym: circuit cardboardcardplug-inadd-in