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scratch hardness
释义
WordReference Random House Unabridged Dictionary of American English © 2024
scratch
′
hard′ness,
Metallurgy
resistance 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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更新时间:2025/7/31 5:04:09