rigid-coupling systemrigid-pipe in-flight refueling system硬: hard; stiff; tough管式: tubular空中加油: flight-refuel; air refueling ...系统: system弯曲软管式空中加油系统: looped-hose system下载手机词典可随时随地查词查翻译关注微信公众号:chachacidian,回复:硬管式空中加油系统,即可在微信中查询翻译