jack-up platform
/ˈdʒakˌʌp ˈplatfɔːm/
n
English · jack-up platform中文 · 自升式平台Español · plataforma montada en gatos mecánicosFrançais · plate-forme auto-élévatrice
意味：Movable structure that is used in shallow water (between 20 and 100 m); it is raised above sea level on retractable pillars resting on the ocean floor.