| 单词 | drummond light |
| 释义 | Drummond lightDrummond light- A torch that burns calcium oxide (lime) and gives off intense white light, it was named for Scottish engineer Capt. Thomas Drummond, R.E. (1797-1840), who invented it around 1825.Drummond lightDrummond light:see calcium oxidecalcium oxide,chemical compound, CaO, a colorless, cubic crystalline or white amorphous substance. It is also called lime, quicklime, or caustic lime, but commercial lime often contains impurities, e.g., silica, iron, alumina, and magnesia. ..... Click the link for more information. . |
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