
Standard Specification for Modified Concentric-Lay-Stranded Copper Conductors for Use in Insulated Electrical Cables
出版:American Society for Testing and Materials

專家解讀視頻
Standard Specification for Modified Concentric-Lay-Stranded Copper Conductors for Use in Insulated Electrical Cables
出版:American Society for Testing and Materials
專家解讀視頻