carbon content的用法和樣例：
例句
用作名詞 (n.)
- The more pronounced ferrite refinement is achieved as carbon content increased.
碳含量提高有利于鐵素體晶粒細化。 - The nano-hardness of both GBF and IGF increased with the increase of carbon content, but IGF's varied little.
且隨著(zhù)碳含量的增高，晶界和晶內鐵素體的納米硬度都隨之升高，但各實(shí)驗鋼中晶內鐵素體的納米硬度相差不大。
