Princeton University official website announced on March 21 that the school's researchers found that α-selenide (α-GeSe) compounds can be converted to another new form (β-GeSe) under certain conditions, with graphene A similar annular.......
With the development of precision agriculture, the research work on agricultural meteorology has become more and more elaborate. It is not only necessary to understand the large meteorological environment, but also to understand the changes in the local climate parameters. Theref.......
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Used photocatalytic titanium white powder mainly two crystalline forms: anatase and rutile, wherein the anatase high catalytic activity. The anatase type mass density (3.849 g/cm 3 ) is slightly smal.......
After the loan is repaid and the operation period expires, the.......
     Simple folk sand gold mining There are three main methods. One is the “moving waterways†method; the second is the â.......
“In 2014, the company will set up a brand new custom-class parts distribution center in Shanghai to help the company's steady development in China.†On December 10, Fang Jingyan, CEO of Daimler Northeast Asia Parts Trading Service Co., Ltd. According to the media day event.......
1 Working principle of air compressor The screw air compressor is a volumetric air compressor, which achieves the purpose of gas compression by gradually reducing the working volume. The working volume of the screw air compressor is composed of a pair of slots of a rotor which are placed .......