German National Library

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German National Library

 It was established in 1912 in Frankfurt. It holds a total of around 26.1 million units.

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Mechanical Properties Of Solids

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The mechanical properties of a material are those properties that involve a reaction to an applied load. The mechanical properties of metal determine the range of usefulness of a material and establish the service life that can be expected. Mechanical properties also used to help classify and identify material. The most common properties considered are: Strength The general ability of a material to withstand an applied force. Hardness Hardness is a measure of how easily a material can be scratched or indented. Hard materials are often also very brittle – this means they have a low resistance to impact. Well Known hard materials include diamond and hardened high carbon steels. Brittleness A material that has tendency to break easily or suddenly without any extension first. Good examples are Cast iron, Concrete, High carbon steels, Ceramics, and some polymers such as Urea formaldehyde (UF). Toughness A material that absorbs impact (sudden forces ...
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Uses OF Alkynes In Nature And Medicine

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