heat shield
noun
1- a device or coating for protection from excessive heat热屏蔽; 挡热装置; 挡热涂层
1.1
- an outer covering on a spacecraft, especially on the nose cone and leading edges, to protect it from the heat generated during re-entry into the earth's atmosphere热屏蔽（尤指宇宙飞船头锥及前缘上的涂层, 用于保护飞船, 使其在重返地球大气层时免受高温毁坏）, 抗热涂层。