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前言 ISO(国际标准化机构)是各国标准化协会(团体会员)的世界性联合组织,国际标准的制订工作是通过ISO技术委员会来进行的。每个团体会员对现有技术委员会的项目感兴趣时,都有权派代表参加该技术委员会。与ISO有关的官方及非官方国际性组织,也可参加工作。技术委员会通过的国际标准草案,在它被ISO理事会批准之前,送发各团体会员进行投票。由ISO/TC 131液压动传系统及其元件技术委员会编制的国际标准ISO 5597/1,已于1977年11月送发给备团体会员。下列国家的团体会员对本标准投了赞成票: 澳大利亚西德罗马尼亚奥地利匈牙利南非比利时印度西班牙巴西爱尔兰瑞典保加利亚意大利土耳其智利日本英国捷克斯洛伐克墨西哥美国芬兰荷兰苏联法国波兰下列国家的团体会员由于技术上的原因对本标准投了反对票。加拿大瑞士
Foreword ISO (International Organization for Standardization) is a worldwide joint organization of national standardization associations (group members). The preparation of international standards is carried out through the ISO Technical Committee. Each group member has the right to send a representative to attend the technical committee when interested in the projects of the existing technical committee. Official and non-official ISO-related international organizations may also join the workforce. The draft International Standard adopted by the Technical Committee is sent to members of the community for voting before it is approved by the ISO Council. The international standard ISO 5597/1, prepared by the ISO / TC 131 Hydraulic Propagation System and its Component Technical Committee, was sent to a group member in November 1977. Members of the following countries voted in favor of this standard: Australia West Germany Romania Austria Hungary South Africa Belgium India Spain Brazil Ireland Sweden Bulgaria Italy Turkey Chile Japan United Kingdom Czechoslovakia Mexico United States Finland Netherlands Soviet Union France Poland Group members from the following countries for technical reasons to this The standard voted against it. Canada Switzerland