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题目作者期国际聚合物工艺学术报告会·················……,’·……”··…’‘’‘’‘””麟学代表团赴苏技术交流总给二1...1...·························……原苏联摩擦学代表团访华···········………。····
Title Author Period International Symposium on Polymer Processes ... ..., ’... ...’ ... ... ’’ ’’ ’ The total exchange of visits to the Soviet Union to the two 1 ... 1 ... ... ... ... ... ... ... ... the former Soviet tribology delegation visited China ······························