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本专利介绍再入飞行器的雷达天线窗,它是用氮化硼、二氧化硅和氮化硼丝做成的复合材料制成。在这种复合材料中最佳的含量范围是二氧化硅为2％至18％,而氮化硼基体为5％至15％。
This patent describes a radar antenna window for reentry aircraft, made of a composite of boron nitride, silicon dioxide and boron nitride wire. The optimum range for this composite is from 2% to 18% of the silica and from 5% to 15% of the boron nitride matrix.