| 单词 | coal salt |
| 释义 | > as lemmascoal salt ΘΚΠ the world > the earth > minerals > types of mineral > halides > [noun] > halite group > sodium chloride salt-stonea1000 saltc1000 sal-gemc1325 salt gem(mea1400 rock salt1562 salt-rock1670 natrum muriaticum1850 gem-salt1852 halite1868 coal salt1877 1877 C. T. Kingzett Hist. Alkali Trade vi. 92 Mr. Hargreaves prefers to use ‘coal salt’, that is to say, salt obtained by surface evaporation of brine liquors by the direct action of flame, as, by these means, salt is obtained which binds better and preserves a porosity. 1880 G. Lunge Theoret. & Pract. Treat. Manuf. Sulphuric Acid & Alkali II. 131 The very fine ‘butter salt’, or ‘coal salt’, obtained by top heat according to Pohl's process. < as lemmas |
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