英语词汇“back-up ring”的翻译、意思、用法、释义-英汉双解词典-注文网

单词	back-up ring
释义	back-up ring 支承环
随便看	drug of abuse drug of choice drug offence drug offences drug offense drug of first choice drug of inferior drugola drugoman drug on the market drug-oriented drug out drug overdose drug pacemaker drug pathogenesis drug peak time drug peddler drug peddlers drug plant drug poisoning drug-poisoning drug-policy drug policy drug-possession drug-prevention 人有三分怕虎，虎有七分怕人人有三分怕鬼，鬼有七分怕人人有三尺长，天下没落藏人有三成人:　知畏惧，成人；知羞耻，成人；知艰难，成人人有三成人: 知恐惧，成人；知羞耻，成人；知艰难，成人人有三昏三迷人有三灾六难人有三父八母人有三衰六旺人有不为也，而后可以有为。きれる【切れる】きれ上がるきれ切れきれ口きれ味きれ地きれ字きれ物きれ痔きれ目