美
[ˌɒksɪ'deɪʃn]
A deep grey metallic powder, which became brown by oxidation.
出自: H. Davy
The oxidation of rubber..is technically known as 'perishing'.
出自: B. D. Porritt
以上内容独家创作,受著作权保护,侵权必究
海词词典,十七年品牌