UNE EN 61837-3 : 2015现行
SURFACE MOUNTED PIEZOELECTRIC DEVICES FOR FREQUENCY CONTROL AND SELECTION - STANDARD OUTLINES AND TERMINAL LEAD CONNECTIONS - PART 3: METAL ENCLOSURES (ENDORSED BY AENOR IN JANUARY OF 2016.)
出版：Asociacion Espanola de Normalizacion
专家解读视频
