驗證網址www.businessdictionary.com安全性

What is heavy metal? definition and meaning

Arsenic, beryllium, cadmium, chromium, lead, manganese, mercury, nickel, and selenium are some of the metals (called 'heavy' because of their high relative atomic mass) which persist in nature and can cause damage or death in animals, humans, and plants e...

網址安全性掃描由 google 提供