The black metal piece between the electric motor and Porsche transmission is an adapter I designed, machined, and welded myself.
黑色金属件之间的电动马达和保时捷传输适配器我设计，加工和焊接自己。
2
The abnormal block and black round structure of 50 axletree steel was studied and analyzed using optical microscopy, transmission electron microscopy, electron probe and so on.
Before studying at Xiamen University I was employed as a corporate English trainer and delivered classes and seminars to companies such as Emerson Power Transmission, Black and Decker, and Bugaboo.