标签：drawing

Did you know that any straight-line drawing on paper can be folded so that the complete drawing can be cut out with one straight scissors cut? That there is a planar linkage that can trace out a...

标签：anycutdrawingfoldinggeometricobjectspaperpolyhedrastraight

书名：Drawing IdeasAHand-DrawnApproachforBetterDesign 作者：MarkBaskinger/WilliamBardel 译者： ISBN：9780385344623 出版社：Watson-Gupt […]

标签：drawingdrawnapproachforbetterdesignideasideasahandmarkbaskingerwilliambardel书友书籍作者简介

These selections from the many writings of Thomas Sowell over a period of a half century cover social, economic, cultural, legal, educational, and political issues. The sources range from Dr. So...

标签：drawingEconomicsrangereadersometimessowellthesethomastopics