20-30 basic statistics on scientific and technological activities of china associations for science and technology (2019)

条目包含内容：2020年中国统计年鉴_20-30 basic statistics on scientific and technological activities of china associations for science and technology (2019) 20-30 basic statistics on scientific and technological activities of china associations for science and technology (2019),,&,&,&,&,&,&,&,&,&,&,&,&,&,&,&,&,&(,),&,