Material?

[Cassy0110]

I've read an informational article about flutes https://houseandbeyond.org/best-flute/ and met the expression "plating material" (the first paragraph). The translator didn't help me, could you help me figure this out?

 

[teechar]

The translator didn't help me. Could you help me figure this out?

Have you looked up "plate" (as a verb) in the dictionary? www.onelook.com