| 释义 |
ˈfire-damp
[See damp n.]
A miner's term for carburetted hydrogen or marsh-gas, which is given off by coal and is explosive when mixed in certain proportions with atmospheric air.
1677Phil. Trans. XII. 895 The Fire-damp did by little and little begin..to appear in crevisses and slits of the Cole. 1710Brit. Apollo III. No. 3. 2/2 What Miners relate concerning Fire-damps. 1774Pennant Tour Scotl. in 1772, 49 The..colliers dare not venture with a candle in spots where fire-damps are supposed to lurk. 1879Cassell's Techn. Educ. I. 143 Two different gases, known by the miners as fire-damp and choke-damp.
attrib.1867W. W. Smyth Coal & Coal-mining 200 The ingenious ‘fire-damp indicator’ of Mr. Ansell. 1874Knight Dict. Mech. I. 863/1 Fire-damp-alarm, one which indicates the presence of dangerous quantities of gas or fire-damp in coal workings. |