This paper examines the history of China’s machine design methods and its status quo. First of all, it discusses machine design methods in ancient China. (1)Th
In 1984, under the guideline laid down by the Communist Party of China, "economic construction must rely on science and technology, and science and technology m
After a disciplinary upsurge, organic chemistry is about to embark on an epoch-making transition at the turn of the century. At present when the discipline is o
<正>A LM-4B launch vehicle lifted off at 11:00 Beijing time on June 15 from the Jiuquan Satellite Launch Center with Huiyan,China’s first X-ray space astronomi