bimetallic
/ˌbaɪmɪˈtælɪk/adjective
1- made or consisting of two metals双金属的。
1.1
- historical of or relating to bimetallism〈史〉（金银）复本位制的。
词源
late 19th cent.: from French bimétallique, from bi- 'two' +métallique 'metallic'.