floatagen.漂浮物(火车轮渡费)floatv.漂浮；浮现；飘动；提出n.浮标；漂浮物；漂浮floating rate bonds浮动利率债券floatation underpan浮游底盘floating roof drain浮顶油罐的排水floating tube sheet活动管板float crosshead pin浮动十字头销floating power unit浮动力装置floating substitute浮代胶floating point data浮点数据floating pilot lamp浮动信号灯float of separation浮选