Consisting of small lumps, esp. of stone or coal; (also) designating a small, rounded lump of stone, coal, etc.
| 单词 | θ6566 |
| 释义 | the world > the earth > minerals > types of mineral > hydrocarbon minerals > [adjective] > coal > other qualities of coal (2) knobbly1839 Consisting of small lumps, esp. of stone or coal; (also) designating a small, rounded lump of stone, coal, etc. sweet1863 Old Chemistry and Metallurgy. Free from corrosive salt, sulphur, acid, etc. In modern use also in the Oil Industry, of petroleum or natural gas… |
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