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

单词	graded standard sand
释义	graded standard sand graded standard sand Ottawa sand, accurately graded between the 600-µ (US Standard No. 30) and 150-µ (No. 100) sieves; used in the testing of cements. Also see Ottawa sand, standard sand.
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