KeywordsandExpressionsLegs:桩腿Spudcans:桩靴Jackingsystem:提升系统Rackandpiniongear:齿条与齿 啮合机构Hydraulicmotor:液压马达Electricmotor:电动马达Jack-uprigs:自升式钻井平台4.1 IntroductionAjack-uprigoraself-elevatingunitisatypeofmobileplatformthatconsistsofabuoyanth (共 4549 字) [阅读本文] >>