This paper discusses the design of HC-49US three overtone quartz wafer in its roller edge, width dimension and corrosion frequency mainly through the summary of some examples and demonstrates its effectiveness through experiments.%本文主要通过对一些实例的总结，对HC-49U/S三次泛音晶片的设计从滚筒倒边、宽度尺寸、腐蚀频率各方面进行探讨。
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