基本解释[经济学]石墨青铜轴承词组短语短语graphite e bronze bearing 石墨青铜轴承porous graphite -containing bronze bearing 多孔石墨青铜轴承Oily bronze graphite bearing 青铜石墨含油轴承bronze -graphite bearing 青铜石墨轴承graphite bronze bearing更多词组专业释义经济学石墨青铜轴承