| 单词 | background heater |
| 释义 | > as lemmasbackground heater f. background heater (see quot. 1961), background heating. ΘΚΠ the world > matter > properties of materials > temperature > heat > heating or making hot > that which or one who heats > [noun] > a device for heating or warming > devices for heating buildings, rooms, etc. space heater1913 background heater1939 1939 J. L. Martin & S. Speight Flat Bk. ii. 25 There are excellent gas convector or background heaters. 1951 Good Housek. Home Encycl. 76/1 A ½ watt per cubic foot for background heating. 1961 Gloss. Terms Gas Industry (B.S.I.) 62 Background heater, a heater normally in continuous use which supplies heat to a room at such a rate as will provide a general temperature slightly below comfort temperature. < as lemmas |
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