有关电磁脉冲及其工程防护的理论和技术已成为当今世界研究的热点。
So the research of the engineering theory and technology on electromagnetic pulse protection have become a hot spots in the world.
热障涂层是一类高温防护涂层，由于其应用的广泛性，已成为近年来涂层研究领域的热点之一。
Thermal barrier coating(TBC) is a kind of high temperature protection coating. Because of its wide application, it has attracted more and more interests in recent years.
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