Flammable gas, esp. methane (marsh gas), given off by coal in mines and which can form an explosive mixture with air. Cf. damp, n.1 1b.
| 单词 | θ70020 |
| 释义 | the world > matter > chemistry > organic chemistry > organic gases > [noun] > carburetted hydrogen (3) firedamp1662 Flammable gas, esp. methane (marsh gas), given off by coal in mines and which can form an explosive mixture with air. Cf. damp, n.1 1b. olefiant gas1797 ethylene, C2H4. Subcategories:— oxycarburetted hydrogen (1) |
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