短語詞組短語tungalloy tungalloy 燒結(jié)碳化鎢合金英語fragile tungalloy 易碎鎢tungalloy oil tube 鎢合金油管Tungalloy white cast iron 鎢白口鑄鐵tungalloy pads on thrust bearing 推力軸承鎢金瓦 返回 tungalloy