1.A whitesmith is a person who works with "white" or light-colored metals such as tin and pewter.
铁匠.与浅色金属(或铝合金类)打交道的匠人.
2.Cu-Sn alloy coating with different Sn content can be replacement plating out on iron and steel surface in a solution comprising of copper sulfate, stanous sulfate, complexant and stabilization agent.