Classification of tea sets

The classified metal appliance refers to an appliance made of a metal material such as gold, silver, copper, iron or tin. It is one of the oldest daily-use appliances in China. Bronze was widely used in the 1500 years before the reign of Emperor Qin Shihuang in the

Directed induction of stem cell fate

Directed induction of stem cell fate UC San Francisco researchers used embryonic stem cells in the laboratory to generate the first functional human thymus tissue, igniting people's expectations for cell therapy. They confirmed in mice that this tissue can be used to promote white bloo

Answers to printing basics

Film is a film, an indispensable part of printing. The key step in turning computer's digital information into physical information. However, now that digital printing is just around the corner, I believe that it will not be long before the film will be ret