1.1 本文件中定义的术语与核材料的无损检测有关。 1.2 所有这些定义都与直接或间接测量核排放（即中子、γ射线或热量）的测量技术有关。 1.3 定义与小组委员会C26.10编写的任何标准和指南相关。 1.4 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。

1.1 The terminology defined in this document is associated with nondestructive assay of nuclear material. 1.2 All of the definitions are associated with measurement techniques that measure nuclear emissions (that is, neutrons, gamma-rays, or heat) directly or indirectly. 1.3 Definitions are relevant to any standards and guides written by subcommittee C26.10. 1.4 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.