opc矿机邀请

『壹』 plc与opc的区别和关系

OPC我不知道.但我知道西门字生产PLC,具体怎么工作那一句两句说不清,呵呵

『贰』 Everbox 邀请码：

2011年2月19日最新出炉邀请码,建议从后往前使用
http://account.everbox.com/invite/
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