Traditional Culture Encyclopedia - Traditional virtues - What are ICD, SSD, SCD and CID equivalent to traditional stations respectively?

What are ICD, SSD, SCD and CID equivalent to traditional stations respectively?

FPK file of spacer

_ What's this? The CID file of process layer equipment and FPK file of interval layer equipment, also called CID file, are processed by related software to make SCD files, and finally reach the equipment (commonly called IED, intelligent electronic equipment). )