XXX Porn Pics - In (M)Aterials, There's Generally A Trade-Off Between Hardness And Brittleness (E.g., A Very Hard Material Will Likely Be Relatively Brittle)

In (M)aterials, there's generally a trade-off between hardness and brittleness (e.g., a very hard material will likely be relatively brittle)

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Dat lovely V line

original: https://reddit.com/r/DatV/comments/d9s0rd/in_materials_theres_generally_a_tradeoff_between/

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Pretty Sharp V I Thought

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Wood Morning With Some V?

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DatV