求翻译：结构材料技术。长寿命，耐高温，抗腐蚀，高强度，低密度结构材料应用，对研制高超音速飞行器至关重要，要求材料和结构技术必须取得重突破。是什么意思？

Structural materials technology. Long life, high temperature, corrosion resistance, high strength, low-density structural materials applications, is essential for the development of hypersonic aircraft, the requirement that materials and construction techniques have made important breakthroughs.

Structural materials and technologies. long-life, high temperature-resistant and corrosion resistant, high-intensity, low-density structure, application materials to develop hypersonic flight server is vital for materials and structures must be obtained technology breakthrough.

Structural material technology.Long life, thermostable, corrosion resistance, high strength, the low density structural material application, to develops the hypersonic flight vehicle to be very important, the request material and the structure technology must obtain the heavy breakthrough.

正在翻译，请等待...

Structural material technology. The long life-span is high temperature resistant, anti-corrosion, the high strength, the structural material application of the low density, essential to developing the hypersonic aircraft, it must obtain and break through again to require material and structural tech