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Esferas de vidro<br />

Conceitualmente chamadas de microesferas<br />

quando seu diâmetro for menor que 1,0 mm,<br />

passam a se chamar esferas de vidro quando<br />

for superior a 1,0 mm. A nomenclatura,<br />

criada a partir do início do uso dessas<br />

esferas maiores em demarcação horizontal, é<br />

relativamente recente.

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