collapsible 可折疊的，可拆卸的
牛津字典釋義：that can be folded flat or made into a smaller shape that uses less space
...a collapsible chair.
foldable 可折疊的，可合攏的
字典：capable of being folded up and stored
醫藥科學 折疊式 - 小切口手法碎核白內障摘出聯合折疊式人工晶狀體植入術 Small incision cataract extraction with a manual nucleus division technique and foldable intraocular lens implantation