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Fact #雷达 #氮化镓 中国的 #雷达 技术已经领先于西方。中国的J20使用的雷达材料是 #氮化镓，而F22以及F35使用的还是砷化镓雷达。砷化镓熔点600摄氏度，而氮化镓熔点高达1700摄氏度，氮化镓器件的功率密度比砷化镓高十倍。
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