etched circuit board

例句：

1. 1. The engineer used a laser to etch the circuit board, revealing the intricate patterns underneath.
   工程师使用激光蚀刻电路板，露出了下面的复杂图案。
2. 2.The new computer has an etched circuit board that can withstand high temperatures.
   这款新电脑的电路板经过蚀刻处理，能够承受高温。
3. 3. The technician carefully removed the etched circuit board from the machine, ensuring no damage was done during removal.
   技术员小心翼翼地从机器中取出蚀刻电路板，确保在拆卸过程中不会损坏。