過熱的; 過熱蒸汽
Superheat \Su`per*heat"\, v. t. [imp. & p. p. {Superheated}; p. pr. & vb. n. {Superheating}.] 1. To heat too much, to overheat; as, to superheat an oven. 2. (Steam Engine) To heat, as steam, apart from contact with water, until it resembles a perfect gas.