toughening的用法和樣例：
例句
用作名詞 (n.)
- The feasibility and the strengthening and toughening mechanism of various processes have also been discussed.
引外對各種強韌化工藝的可行性及強韌化機理進行了初步分析和探討。 - But different treatments have different effects in toughening of high chromium cast iron.
但不同的處理方法對高鉻鑄鐵韌化所起的作用也是不同的。
