A HUNDRED years ago, when electricity was usually generated by the use of frictional or Wimshurst machines and detected by gold leaf electroscopes, it was well known that an electric charge on a ...
A DIFFICULTY in connexion with electric supply when metal sheathing of electric wiring and apparatus is employed is how to connect this sheathing to earth in such a way that, in the event of it ...
The patent application (Publication Number: US20240030472A1) describes a membrane electrode assembly for fuel cells, consisting of a proton exchange membrane sandwiched between two electrode layers.
一些您可能无法访问的结果已被隐去。
显示无法访问的结果