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graywacke的意思

graywacke

英 ['ɡreɪ,wækə] 美 ['gre,wæk]
  • n. 杂砂岩;硬砂岩(等于greywacke)

graywacke

英文词源


graywacke (n.)
also greywacke, 1806, partial translation of German grauwacke; see gray (adj.) + wacke.