potassium

/pəˈtæsiəm/ 名词 B2

中文：钾

A soft, waxy, silvery reactive metal that is never found unbound in nature; an element with atomic number 19 and atomic weight of 39.0983. (uncountable) · We all need potassium, and green vegetables are a good source.
An atom of this element. (countable) · This reaction substitutes a potassium for a sodium.

复数 potassiums

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