例句與造句

1. A charpy test is usually much less expensive to perform than a fracture toughness characterization experiment .
   夏比（沖擊）試驗(yàn)通常要比斷裂韌性試驗(yàn)的費(fèi)用低得多。
2. It's difficult to find charpy test in a sentence. 用charpy test造句挺難的