UNI EN ISO 128-21:2002现行
Technical Drawings - General Principles Of Presentation - Preparation Of Lines By Cad Systems
出版：Italian Standards
专家解读视频
Defines procedures for calculating important basic types of non-continuous lines and their line elements.
SN EN ISO 128-21:2001 - Identical
BS EN ISO 128-21:2001 - Identical
DIN EN ISO 128-21 (2002-12) - Identical
ONORM EN ISO 128-21:2002 - Identical
NBN EN ISO 128-21:2001 - Identical
NF EN ISO 128-21:2001 - Identical
I.S. EN ISO 128-21:2002 - Identical
NS EN ISO 128-21 Ed. 1 (2002) - Identical
UNE EN ISO 128-21:2002 - Identical
SS EN ISO 128-21 Ed. 1 (2001) - Identical
NEN EN ISO 128-21:2001 - Identical
ISO 128-21:1997 - Identical
