| 单词 | grate-surface |
| 释义 | > as lemmasgrate-surface grate-surface n. the area in square feet covered by the fire-bars of a furnace or boiler. ΚΠ 1854 E. Ronalds & T. Richardson Knapp's Chem. Technol. (ed. 2) I. 255 The usual dimensions..are 1 square foot of grate surface for a consumption of 20 lbs. of coal per hour. < as lemmas |
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