| 单词 | grit-bed |
| 释义 | > as lemmasgrit-bed grit-bed n. ΚΠ 1890 Jrnl. Geol. Soc. 46 496 The red slates with hard grit beds south of Goodrington beach support a Triassic outlier. 1953 W. J. Arkell & S. I. Tomkeieff Eng. Rock Terms 53/1 The original sense of ‘gravelly’ seems to be preserved in the local term Grit Bed used for the Melbourn Rock in the Middle Chalk of Kent and Sussex, which is a band of limestone with a hard nodular structure. < as lemmas |
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