削光面;
Protective experimental research on spray polyurea on concrete faced rock fill dam surface
混凝土面板坝表面喷涂聚脲防护试验研究
With the rapid development of infrared ( IR) detection and guidance technologies, the threat faced by surface warships will be more and more serious.
随着红外探测技术和红外制导技术的迅速发展,水面舰艇面临越来越严重的红外威胁。
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