短語詞組短語bearing rail beam 承軌梁elastic bearing continuous beam 彈性支承連續(xù)梁bearing wall beam 承墻梁load -bearing wall beam 連續(xù)承墻梁the simple bearing wall beam 簡支墻梁missile -bearing laser beam 導彈導引激光束body side bearing beam 上旁承梁radio -bearing beam 定向無線電射束center bearing beam 中搖枕 返回 bearing beam