柯林斯词典heat shield 1. N a coating or barrier for shielding from excessive heat, such as that experienced by a spacecraft on re-entry into the earth's atmosphere 防熱護罩 返回 heat shield剑桥词典the part of a spacecraft's structure that prevents it from getting too hot as it returns to earth （宇宙飛船的）隔熱屏，隔熱罩 返回 heat shield