英语词汇“back filling system”的音标、翻译、中文意思、用法、释义-英汉双解词典

词汇	back filling system
释义	back filling system[矿业] 充填系统
随便看	race against time pyromaniac queen-size radioactive rah Queen's Counsel raillery queen-size bed rapidity railroad radio queen size queen's birthday rapier railroad crossing quincunxes radioactive substance radioactive decay race car queen-sized railroader railroad car queen-sized bed racecourse railhead