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
At the Second World Conference on Coal held recently in London,a consensus was reached on the principal and continuing role played by coal on the world market i
The Primulaceae is a large subcosmopolitan family of 22 genera and about 1,000 species with a wide diversity in morphological features as well as in ecological