| 单词 | rock binder |
| 释义 | > as lemmasrock binder rock binder n. = rock bind n. ΚΠ 1883 W. S. Gresley Gloss. Terms Coal Mining Rock binders, sandy shale. 1922 W. R. Jillson Oil Field Stratigr. Kentucky 500 Sandy rock binder [thickness] 0 : 3½ [depth] 638 : 4. 1992 A. J. Kwitowski et al. Teleoperation of Highwall Mining Syst. (U.S. Bureau of Mines Rep. Investigations No. 9420) 14/1 The falls consisted of the roof coal and rock binder and often caused both color video subsystems to become effectively unstable. < as lemmas |
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