a temperature at which iron or steel assumes a bluish tint as a result of becoming covered with a film of iron oxide, typically about 300°C…
| 单词 | θ209439 |
| 释义 | society > occupation and work > industry > working with specific materials > working with metal > [noun] > specific temperatures in metalworking (3) blue heat1793 a temperature at which iron or steel assumes a bluish tint as a result of becoming covered with a film of iron oxide, typically about 300°C… cherry-red1802 Having the colour of ripe red cherries; esp. applied to the colour of iron, coal, etc., at a low red heat. Also substantive. recrystallization temperature1907 the temperature at which recrystallization occurs; cf. sense 3. |
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