bottom air column charge
A Lloyd’s policy form of insurance on an air cushion vessel hovercraft
ACV-Air Cushion Vchicle
air cushion
气垫层
气垫
气垫枕
空气层
气帘
气幕
气垫空气减震器
气垫空气缓冲器
空气减震器
充气包装垫
空气垫
空气隙
分类法
air cushion belt conveyor
air cushion crash rescue vehicle
air cushion drilling platform