tthung 发表于 2013-12-8 18:53:16

IEEE Std 1390.2-1999

IEEE Std 1390.2-1999
IEEE Standard for Automatic Meter Reading Via Telephone -Network to Telemetry Interface Unit


admin 发表于 2013-12-9 11:57:09

谢谢您的分享，金币已奖励！
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