s.steel其实并非项链品牌，而是stain steel的缩写，意为不锈钢材质。 为了保持美观性，项链上一般只会刻印品牌logo或较有意义的文字 …
Stainless steel, any one of a group of alloy steels usually containing 10 to 30 percent chromium. In conjunction with low …
Learn about the definition, properties, uses and production of steel, the world's most important engineering and …
更多内容请点击：What is steel? - worldsteel.org