?超硬铝

... extra strong 特强的 extra super duralumin 超硬铝 extra 额外的 ...

?特超杜拉铝

... 杜拉铝覆板 duralumin alclad 特超杜拉铝 extra super duralumin 硬铝杜拉铝 duralumin ...

?超高强度钢铝

... extra latten || 热轧特薄板 extra super duralumin || 超高强度钢铝 extra-column effect || 柱外效应 ...