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[AB] [原创]RS-232、RS-422与RS-485标准及应用 |
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发表于 2007-5-19 15:40:00
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??:(fqxyfy)[??]RS-232?RS-422?RS-485???...
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发表于 2007-9-6 19:20:00
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??:(fqxyfy)[??]RS-232?RS-422?RS-485???...
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