- ablator
[ablator 词源字典]
- " Astronautics and Materials Sci. A protective surface layer (e.g. in a rocket engine) made of a material which ablates readily when heated and so reduces the transfer of external heat to the underlying material", Mid 19th cent.; earliest use found in Jeremy Bentham (1748–1832), philosopher, jurist, and reformer. From ablate + -or.[ablator etymology, ablator origin, 英语词源]