EHang, JAC Motors and Guoxian Holdings will conduct joint research on the automation of aircraft production technologies and build a manufacturing base, all to accelerate low-altitude aviation ...
But one of the challenges of hydrogen adoption is the high temperature at which it burns ... stabilized oxide coating thermally grown from a valve metal-based complex concentrated alloy, Materials ...
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