yǒu​sè​jīn​shǔ

non-ferrous metals

有色金属 (有色金屬) yǒu​sè​jīn​shǔ
non-ferrous metals adjective
non-ferrous metals (all metals excluding iron, chromium, manganese and their alloys)

This factory specializes in recycling various non-ferrous metals such as copper and aluminum.

Frequency

Written text
6.76 per million

Sources

Definitions
CC-CEDICT
Frequency data
BCC Corpus (BLCU)