英语词汇“scratch hardness”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	scratch hardness
释义	WordReference Random House Unabridged Dictionary of American English © 2024 scratch′ hard′ness, Metallurgyresistance of a material, as a stone or metal, to scratching by one of several other materials, the known hardnesses of which are assembled into a standard scale, as the Mohs' scale of minerals. 1925–30
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