n.硬铝（合金），杜拉铝...

The duralumin micro - base - part is produced after the turn - milling cutting experiment.经过实际车铣加工试验,实现了微小型硬铝座体零件的完整加工....

duralumin的音标：duralumin的英式发音音标为：[djʊə'ræljʊmɪn]duralumin的美式发音音标为：[dju'ræljumɪn]...