您要查找的是不是：
- 冗余PLCPLC
- 冗余redundancy
- 冗余的superfluous
- PLCPLC(Programmable Logic Controller)
- 软PLCSoftPLC
- 数据冗余data redundancy
- 虚拟PLCVirtual PLC
- 冗余构件redundant member
- PLC技术PLC technology
- 保护冗余protective redundancy
- 三菱PLCMitsubishi PLC
- 备份冗余standby redundancy
- PLC设计PLC design
- 备用冗余standby redundancy
- PLC程序PLC program
- 备用替换冗余standby replacement redundancy
- PLC教学PLC teaching
- 被动冗余passive redundancy
- 软件PLCSoftPLC
- 备用冗余量standby redundancy
