| 单词 | quartz sand |
| 释义 | > as lemmasquartz sand quartz sand n. ΚΠ 1771 J. R. Forster tr. P. Kalm Trav. N. Amer. III. 25 Below this was a pale grey angulated quartz sand. 1852 W. H. Sleeman Diary Tour through Oude II. 68 Quartz-sand commonly contains some of the inorganic substances necessary to plants. 1984 E. P. DeGarmo et al. Materials & Processes in Manuf. (ed. 6) xxiii. 632 Quartz sand is used primarily in coated abrasives and in air blasting..but artificial abrasives are also making rapid inroads in these applications. < as lemmas |
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