Esp. in primary air. Designating air admitted to the fuel in a burner or furnace at or before the earliest stage of combustion. Cf. secondary, adj.…
| 单词 | θ75276 |
| 释义 | the world > matter > gas > air > [noun] > specific air > admitted to fuel in furnace (1) primary air1915 Esp. in primary air. Designating air admitted to the fuel in a burner or furnace at or before the earliest stage of combustion. Cf. secondary, adj.… |
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