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(jìn)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。
