发布时间:2025-02-01 02:40:11
有的PCB是很多个小单元组成,断板就是单元断开不在连一块啦,连一块可以实现自动化生产,如果断板就不能了,不过单元还是有用的,只是不利于自动化生产,需要手工完成
继lisa 75亿豪宅后twice周子瑜也了41亿韩元的高级阁楼
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