deawn
checked
apprd
3rd angle projection
tolreance unless otherwise specified
angular
unit
deawn
checked
apprd
3rd angle projection
tolreance unless otherwise specified
angular
unit
deawn,是drawn吧?绘图
checked有格子花纹的
apprd=appeared出现的
3rd angle projection第三角投影
tolerance误差
unless除非
otherwise 否则
specified指定的
angular角形的
unit单元