| 释义 |
热障rèzhàng飞机、火箭等在空中超音速飞行时,其表面气流的温度很高,使金属外层强度降低,甚至熔化或烧毁,这种现象叫做热障。{heat barrier; phenomenon in which the temperature of the air current on the surface of an aircraft or rocket on a supersonic flight rises so high that it reduces the intensity of its metal cover or even melts or burns it down} |