1.1 这些表列出了一些纺织纤维常用的商业水分回收率和商业余量。此类回潮率和允许值主要用于在购买或出售特定纤维时确定其商业重量。这些回潮率和余量值也用于计算纱线的线密度，在使用这些因素的过程中，以及在纤维混纺的定量分析中。 1.2 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ====意义和用途====== 4.1 特定纤维类型的商业回潮率和商业余量所列的值不是实验确定的量，而是利益相关方出于商业目的得出的纯定义值。纺织材料的实际回潮率值在与测试用标准大气保持水分平衡时，可能会偏离所列值。平衡回潮率值取决于材料的先前历史。 纺织材料的实际整理含量可能会偏离列出的值（见测试方法 D2494 ).

1.1 These tables list the commercial moisture regains and commercial allowances commonly used for a number of textile fibers. Such moisture regain and allowance values are intended primarily for determining the commercial weight of a specific fiber when the fiber is bought or sold on this basis. These regain and allowance values also are used in calculating the linear density of yarn in procedures employing such factors and in the quantitative analysis of fiber blends. 1.2 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 4.1 The value listed for the commercial moisture regain and commercial allowance of a specific fiber type is not an experimentally determined quantity but a purely defined value arrived at for commercial purposes by interested parties. The actual moisture regain values of textile materials, when in moisture equilibrium with the standard atmosphere for testing, can deviate from the listed values. Equilibrium moisture regain values depend upon the previous history of the material. The actual finish content of textile materials can deviate from the listed values (see Test Method D2494 ).