He invented the metal alloys stellite and martensitic stainless steel and designed one of the earliest automobiles in the United States.

他发明了哈氏合金以及马氏不锈钢，设计出了美国最早的汽车之一。

Could exponentially increase the corrosion resistance of martensitic stainless steel to improve the polishing performance of the workpiece.

可成倍提高马氏体不锈钢的抗蚀性，提高工件的抛光性能。