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  RJ45\u7684\u52a3\u52bf<\/h3>\n

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RS232\uff1a\u4e00\u79cd\u5e38\u89c1\u7684\u7f51\u7edc\u8fde\u63a5\u6280\u672f<\/h2>\n

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  RS232\u7684\u4f18\u52bf<\/h3>\n

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  RS232\u7684\u52a3\u52bf<\/h3>\n

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