1.1 本术语涵盖了通常不使用试验筛进行分析的颗粒材料的描述和分析程序中使用的术语的定义。这些术语直接涉及分析中使用的设备、待分析材料的物理形式以及选定的描述性数据简化和分析格式。 1.2 颗粒和喷雾特性委员会E29认为，无论这些术语是否出现在现有的ASTM标准中，都必须包括委员会范围内明确的术语和定义。常见用法和出现在通用语言词典中的术语通常不包括在内，除非它们在粒子表征的上下文中具有不同于通用语言定义的特定含义。 1.3 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 ===意义和用途====== 3.1 粒子表征方法产生的数据的解释和使用在很大程度上取决于描述该数据的术语的定义。极其重要的是，在比较不同表征技术的数据时，甚至在关联同一技术的数据的时候，都要以完全相同的方式定义这些术语。 3.2 同样重要的是，颗粒表征方法和由此产生的数据的用户理解这些方法的原理，以便可以根据这些原理来解释数据中的差异和相似性。这种理解有助于避免在比较不同表征方法的数据时出现分歧。 3.3 本术语中包含的定义将有助于解释与用于产生该数据的方法有关的颗粒表征数据。

1.1 This terminology covers the definitions of terms used in the description and procedures of analysis of particulate materials not ordinarily analyzed using test sieves. The terms relate directly to the equipment used in analysis, the physical forms of the materials to be analyzed, and selected descriptive data reduction and analysis formats. 1.2 Committee E29 on Particle and Spray Characterization believes that it is essential to include terms and definitions explicit to the committee’s scope, regardless of whether the terms appear in existing ASTM standards. Terms that are in common usage and appear in common-language dictionaries are generally not included, unless they have specific meanings in the context of particle characterization different from the common-language definitions. 1.3 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 ====== 3.1 Interpretation and use of data generated by particle characterization methods is highly dependent on the definitions of terms describing that data. It is extremely important that those terms be defined in precisely the same way both when comparing data from different characterization techniques and even when correlating data from the same technique. 3.2 It is likewise important that users of particle characterization methods and the data generated therefrom understand the principles of the methods, so that differences and similarities in the data can be interpreted in relation to those principles. That understanding can help to avoid disagreements when data from different characterization methods are compared. 3.3 The definitions contained in this terminology will aid in the interpretation of particle characterization data with respect to the method(s) used to produce that data.