brass coloring 中文意思是什麼
-
New coloring technology for brass slide chain at normal temperature
黃銅拉鏈常溫著色新工藝 -
Chemical black coloring of brass and tin surface
黃銅和錫表面化學著黑色 -
The techniques of coloring chocolate up brass ' s surface
黃銅表面著巧克力色工藝
分享友人