如果用传统铝质材料上制造的话，以下大多数特点将不复存在。
Most of the features listed below could not have been built in an airplane made mostly of traditional aluminum.
铝质材料在空气中是极不稳定的，容易形成用肉眼难以识别的氧化膜。
Aluminum material in air is very unstable easy to form with the naked eye, it is difficult to identify the oxide film.
本实用新型涉及一种隔音材料，尤其多孔隙铝质材料制成的泡沫铝板。
The utility model relates to a sound insulating material, in particular to a foamed aluminum board made of a porous aluminum material.
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