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A second circuit layer manages charging, battery protection, and signal routing. Our scan shows fine copper traces interconnecting both PCBs through micro-flex jumpers. This modular electrical design separates audio from power pathways to reduce interference that could distort sound. It also allows precise control of the lithium-ion microbattery’s charge cycles.
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To tidy up, we can bring the middle part to a common denominator:
在胡敏看来，各地对“中心”的追逐并非凭空而起，看似百花齐放的定位背后，其实贯穿着三条交织的逻辑线：夯实既有的生产力基础、适应高质量发展要求创新驱动、因地制宜激发新的竞争优势。