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适用范围：<p id="s00002">1.1 These tables include (<span class="italic">1</span>) a series of conversion factors required to convert the number of a yarn measured in a specific system to the equivalent number measured in various other systems (see Table 1), and (<span class="italic">2</span>) specific equivalent numbers for yarns measured in various systems (see Table 2).</p> <p id="s00003">1.2 The content is basically consistent with recommendations of the International Organization for Standardization (ISO) Standard 2947.</p> <p>1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.</p> <p id="s00099">1.4 <span class="italic">This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.</span>