
Letter Symbols To Be Used In Electrical Technology Part 1: General
出版:National Standards Authority of Ireland

專家解讀視頻
Specifies letter symbols for quantities and units used in electrical technology, and rules for their use and combination.
HD 60027-1 : 200S1 - Identical
HD 60027-1 : 200S1 - Identical
IEC 60027-1 : 6.0 - Identical