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部标准《密封垫片技术条件》HBO—78—72已经正式颁布,并于一九七三年十月一日开始实施。为了便于各单位贯彻执行,现将本标准作一简单的介绍:
Ministry standard “Gasket Technical Specifications” HBO-78-72 has been officially promulgated and came into effect on October 1, 1973. In order to facilitate the implementation of all units, now this standard for a brief introduction: