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  \u7535\u5b50\u8bbe\u5907\u4e2d\u7684S\/N\u95ee\u9898<\/h3>\n

  \u5728\u7535\u5b50\u8bbe\u5907\u4e2d\uff0cS\/N\uff08Signal-to-Noise\uff09\u6bd4\u503c\u5e38\u5e38\u88ab\u7528\u6765\u8bc4\u4f30\u8bbe\u5907\u7684\u6027\u80fd\u3002\u5f53\u4fe1\u566a\u6bd4\u4e3a30db\u65f6\uff0cS\/N\u6bd4\u503c\u7684\u53d8\u5316\u5bf9\u4e8e\u8bbe\u5907\u6027\u80fd\u4f1a\u6709\u600e\u6837\u7684\u5f71\u54cd\uff1f\u6211\u4eec\u5c06\u5728\u672c\u8282\u4e2d\u8fdb\u884c\u63a2\u8ba8\u3002<\/p>\n

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\u603b\u7ed3<\/h2>\n

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