| 单词 | coal shale |
| 释义 | > as lemmascoal shale coal shale n. shale which occurs adjacent to deposits of coal, often containing fossils. ΚΠ 1793 W. Martin Figures & Descr. Petrifactions Coll. Derbyshire Descr. Plate 13* A petrified vegetable... Common in argillaceous grit and coal-shale: frequent also in the coal itself. 1898 Science 8 July 36/2 Hearing some one say, as he picked up a piece of coal shale, that there was a fish scale in it. 1982 Jrnl. Appl. Ecol. 19 427 A comparison between acid and more basic coal shales showed them to have somewhat dissimilar mite communities. 2012 Jrnl. (Newcastle) (Nexis) 1 Sept. 30 The builder couldn't resist buying the cheap coal shale as hardcore for under the concrete floor. < as lemmas |
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