The freshly abraded specimen must then be washed in industrial spirit and Analar acetone.
然后,研磨好的新鲜必须在工业酒精及纯丙酮中洗涤。
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57. Question: What is the function of a test coupon in PCBA manufacturing? Answer: A test coupon is used to monitor and verify the quality of the manufacturing process, such as soldering quality, plating thickness, and PCB material integrity.
57. 问题:测试试样在 PCBA 制造中的作用什么?答案: 测试试样用于监控和验证制造过程的质量,例如焊接质量、电镀厚度和 PCB 材料完整性。