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前言 ISO(国际标准化组织)是各国标准协会(ISO的成员团体)的世界性联合会。制定国际标准的工作是通过ISO技术委员会进行的。对已经建立了技术委员会的某项目感兴趣的每个成员团体有权参加该技术委员会。与ISO有联络的官方或非官方国际组织,也参加这项工作。技术委员会采纳的国际标准草案,在被ISO中央理事会批准为国际标准之前散发给各成员团体征求表决意见。 1972年以前,技术委员会的工作成果以ISO推荐标准的形式发表,这些文件正处于转变为国际标准的过程。怍为这一过程的一部分,ISO/TC45橡胶和橡胶制品技术委员
Preface ISO (International Organization for Standardization) is a worldwide federation of national standards associations (member organizations of ISO). The work of setting international standards is conducted through the ISO technical committee. Each member group interested in a project that has established a technical committee has the right to participate in the technical committee. Official or non-official international organizations that have liaison with ISO also participate in this work. Draft international standards adopted by the technical committee are distributed to all member groups for approval before they are approved by the ISO Central Committee as international standards. Before 1972, the results of technical committee work were published in the form of ISO recommended standards. These documents are in the process of changing to international standards. As part of this process, ISO/TC45 rubber and rubber products technical committee