Copyright 2025 The Associated Press. All Rights Reserved. Pakistan’s Saim Ayub is helped from the field after injuring his ankle while fielding the ball during the ...

[导读]PCB板，全称为印刷电路板(Printed Circuit Board)，是一种用于组装电子元件的基板。它通常由一层或多层绝缘材料制成，上面印制有铜线轨迹，这些轨迹将电路中的各个部分连接起来，形成一个完整的电路系统。这些绝缘材料通常是玻璃纤维增强塑料，而导电 ...