ISO 128-21 : 1997(R2013)现行
TECHNICAL DRAWINGS - GENERAL PRINCIPLES OF PRESENTATION - PART 21: PREPARATION OF LINES BY CAD SYSTEMS
出版：International Organization for Standardization
专家解读视频
Defines procedures for calculating important basic types of non-continuous lines and their line elements.
PN EN ISO 128-21 : 2006 - Identical
NF ISO 128-21 : 97 XP - Identical
NEN ISO 128-21 : 1997 - Identical
BS ISO 128-21 : 1997 AMD 13521 - Identical
DS EN ISO 128-21 : 2001 - Identical
BIS IS 10714-21 : 2001(R2017) - Identical
DIN ISO 128-21 E : 1997 - Identical
DIN ISO 128-21 : 1997 - Identical
AS ISO 128.21-2005 (R2016) - Identical
