IEC 60263 : 3.0现行
SCALES AND SIZES FOR PLOTTING FREQUENCY CHARACTERISTICS AND POLAR DIAGRAMS
出版：International Electrotechnical Committee
专家解读视频
Specifies standard proportions for the scales for plotting frequency characteristics and polar diagrams. Does not apply to audiograms.
DIN IEC 60263 : 1999 - Identical
NFC 97 030 : 1970 - Identical
NBN C 92 210 : 1981 AMD 1 1982 - Identical
UNE 20602 : 1978 - Identical
NEN 10263 : 1983 - Identical
DIN IEC 60263 : 1999 - Identical
NEN 10263 : 1983 - Identical
UNE 20602 : 1978 - Identical
NFC 97 030 : 1970 - Identical
NBN C 92 210 : 1981 AMD 1 1982 - Identical
