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5.1.4 un equipo de computadoras contiene más de 60 tipos de componentes metálicos y otros materiales: componentes primarios como el acero están presentes en grandes cantidades; componentes menores como la plata se presentan en pequeñas cantidades; y microcomponentes y oligocomponentes, como el oro, están presentes en cantidades diminutas.
5.1.4 computing equipment contains more than 60 types of constituent metals and other materials: primary constituents such as steel occur in large amounts; minor constituents such as silver occur in small amounts; and micro or trace constituents such as gold occur in very minute amounts.