短語詞組短語bucket rock grab 鏟斗式抓巖機bucket t rock grab 鏟斗式抓巖機salvage with bucket grab 抓斗打撈法bucket grab hoist 抓斗吊車hydraulic bucket grab 液壓抓斗impact bucket grab 沖擊抓斗grab bucket 挖泥抓斗;爪斗grab bucket dredger 抓斗式挖泥船grab bucket scales 抓斗秤 返回 bucket grab