英语词汇“ottawa sand”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	ottawa sand
释义	Ottawa sand Ottawa sand Naturally rounded grains of nearly pure quartz, produced by processing silica sand obtained from deposits near Ottawa, Ill.; used in mortar test specimens in testing hydraulic cement. Also see standard sand, graded standard sand.
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Ottawa sand