| 单词 | alum slate |
| 释义 | > as lemmasalum slate alum slate n. = alum shale n. ΘΚΠ the world > the earth > minerals > ore > [noun] > metal ore > alum ore alum earth1612 alum slate1675 alum ore1725 bing1815 the world > the earth > structure of the earth > constituent materials > rock > metamorphic rock > [noun] > slate > others alum slate1675 peach1778 itacolumite1863 itabirite1868 1675 W. Simpson Disc. Sulphur-bath Knarsborough 7 Alom slate or stone..which has had the Salt discernably extraverted. 1711 B. Allen Nat. Hist. Mineral-waters Great Brit. 33 Scarborough-Water... Situate close to the Sea-shore, so as to be overflown by Spring-Tides, the Allum Slate being dug just by it. 1805 Edinb. Rev. 6 237 He also classes the alum-slate..among the transition rocks. 1912 C. W. Askling & E. Roesler Internal Combustion Engines ii. 65 A light-flowing oil with high heating value has been produced from Swedish alum slate. 2000 B. Berge Ecol. Building Materials vii. 111 Extracting volcanic or alum slate requires caution. < as lemmas |
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