The sulfide assemlage consists largely of pyrrhotite, pentlandite, chalcopyrite, and pyrite.硫化物集体大部由磁黄铁矿 、 镍黄铁矿 、 黄铜矿及黄铁矿组成.The hydrogen sulfide is often blamed for the corrosion.硫化氢常常引起腐蚀.Lithopone: B 301 lithopone: whi...
These effects are antagonizeed by sodium sulfide.这些效果被硫化钠中和了.They'd have a lot of hydrogen sulfide gas bound up in their cells.他们的牢房里有大量的硫化氢气体。The hydrogen sulfide is often blamed for the corrosion.硫化氢常常引起腐蚀....
约翰·巴丁也是超导电性理论的创立者之一。John Bardeen was also co-developer of the theory of superconductivity.12月23日, 布拉顿 和巴丁发明点式电视晶体管.Invention of the point contact transistor by Brattain and Bardeen. ( December 23 ).发明者包括约翰.巴丁, 沃尔特.布拉顿和威廉...
Industrial waste burned on the surface of Lake Erie near Cleveland in 1970.1970年工业废物污染了克利夫兰附近的伊利湖湖面.Cleveland has always had a reputation for being a dirty, ugly, boring city, though now they say it is much better.克利夫兰一直...