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мышьяк
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[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en] |
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arsenic
A toxic metalloid element, existing in several allotropic forms, that occurs principally in realgar and orpiment and as the free element. It is used in transistors, lead-based alloys, and high temperature brasses. (Source: CED)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en] |
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