NFC 26 280:1978现行
Methods Of Testing Insulating Materials, Methods Of Test For The Determination Of Ionic Impurities In Electrical Insulating Materials By Extraction With Liquids
出版：Association Francaise de Normalisation
专家解读视频
78 [01/07/1978]
IEC 60589 Ed. 1.0 - Identical
HD 381:1978 - Identical
HD 381 : 200S1 - Identical
IEC 60589 : 1.0 - Identical
IEC 60589 : 1.0 - Identical
HD 381 : 200S1 - Identical
