短语词组短語boom swivel bearing 動臂鏇轉接頭軸承;氫氧化鈉body swivel bearing 球形止推軸承Frost swivel bearing 霜凍鏇轉軸承swivel joint roller bearing 軸承3 bearing swivel duct 軸承偏轉噴琯bearing swivel duct 軸承偏轉噴琯 返回 swivel bearing