1.1 这些定义涵盖了与航空航天透明材料和外壳相关的多个标准之一中出现的通用光学术语。 1.2 在大多数情况下，这些定义涵盖了透明度行业中使用的特殊含义。没有试图将透明度行业以外使用的相同术语的共同含义包括在内。 1.3 通常，所包含的定义已被批准为标准。 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 These definitions cover generic optical terms which appear in one of more standards relating to aerospace transparent materials and enclosures. 1.2 The definitions cover, in most cases, special meanings used in the transparency industry. No attempt has been made to include common meanings of the same terms as used outside of the transparency industry. 1.3 Definitions included have, in general, been approved as standard. 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.