
Electromechanical All-Or-Nothing Relays - Part 54: Blank Detail Specification - Electromechanical All-Or-Nothing Telecom Relays Of Assessed Quality - Two Change-Over Contacts, 15 Mm X 7,5 Mm Base
出版:Polish Committee for Standardization

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Electromechanical All-Or-Nothing Relays - Part 54: Blank Detail Specification - Electromechanical All-Or-Nothing Telecom Relays Of Assessed Quality - Two Change-Over Contacts, 15 Mm X 7,5 Mm Base
出版:Polish Committee for Standardization
專家解讀視頻