共 50 条
- [21] Serb threat subsides, but U.S. still worries Aviation Week and Space Technology (New York), 1999, 150 (15):
- [23] New Trends in U.S. Industrial Concentration Review of Industrial Organization, 2001, 18 : 301 - 326
- [24] U.S. strong for industrial laser processing Belforte, D., 1600, Laser Institute of America, 13501 Ingenuity Drive - Suite 128, Orlando, FL 32826, United States (20):
- [25] U.S. National climate assessment gaps and research needs: overview, the economy and the international context Climatic Change, 2016, 135 : 173 - 186
- [26] U.S., U.K. missile needs seen converging Aviation Week and Space Technology (New York), 2000, 153 (06):
- [27] Filling the gaps: The U.S. army aviation applied technology directorate develops, demonstrates and applies rotorcraft technology to answer warfightlng needs Vertiflite, 2009, 55 (01): : 48 - 53
- [29] U.S. national parks accessibility and visitation Journal of Mountain Science, 2019, 16 : 2894 - 2906
- [30] U.S. army battery needs - present and future Hamlen, R.P., 1600, IEEE, Piscataway, NJ, United States (10):