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<a accesskey="3" href="page.php?w=Dimensionless_quantity&amp;p=2">3.Next</a>
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<p><b>Dimensionless quantities</b>, or <b>quantities of dimension one</b>, are <a href="page.php?w=Physical_quantity">quantities</a> defined in a manner that prevents their aggregation into <a href="page.php?w=unit_of_measurement">units of measurement</a>. Typically expressed as <a href="page.php?w=ratio">ratio</a>s that align with another system, these quantities do not necessitate explicitly defined <a href="page.php?w=Unit_of_measurement">units</a>. For instance, <a href="page.php?w=alcohol_by_volume">alcohol by volume</a> (ABV) represents a</p><p>
<a accesskey="3" href="page.php?w=Dimensionless_quantity&amp;p=2">3.Next</a>
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