chromium

IPA/ˈkrəʊmiəm/
KK[krˈomiəm]IPA/ˈkrəʊmiəm/

chromium — noun

1. a hard, shiny grey metal that is one of the basic chemical elements; it does not

1.名詞C1
釋義

a hard, shiny grey metal that is one of the basic chemical elements; it does not rust easily, so a thin layer of it is often put on top of other metals, and it is mixed with iron to make stainless steel.

例句

The taps in Theo's bathroom are coated with chromium to keep them shiny.

coated with chromium for surface protection

Stainless steel contains iron, carbon, and a small amount of chromium.

uncountable: 'a small amount of chromium'

用法筆記

Almost always uncountable. Frequently appears with quantity expressions such as 'a layer of chromium', 'a small amount of chromium', or 'traces of chromium'.

常見錯誤

❌My watch is made of chromiums.
✅My watch is made of chromium.
💡chromium is uncountable; never add -s.
❌The chair is made of chrome metal called chromium.
✅The chrome on the chair is a thin layer of chromium.
💡'chrome' is the shiny finish or coating; 'chromium' is the underlying chemical element.