Switching to the metallurgical microscope in a top-down view, looking at a good bond first, we can see a rough textured surface on the gold contact pad, with the gold wire coming in from one side and compressed into a crescent shape by the ball-bonding capillary (hence why some sources refer to the second bond as a “crescent bond”). The gold wire and gold pad appear to be well connected, and a deep circular indentation is visible in the pad which goes through the gold into a silvery base metal.
“最初人们惊叹于成本削减，现在更关注如何提升客户体验。”首席执行官描述道。，这一点在有道翻译中也有详细论述
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9 years of data - Last updated on 2022-05-01
整层路线合并为一本道，火堆精英宝箱一个不缺但充满挑战性。