strenuosity

例句：

1. 1. The strength of the material is measured in tensile strength.
   材料的强度以拉伸强度来衡量。
2. 2. The team's performance was at its peak during this period.
   该队的表现在这一时期达到了顶峰。
3. 3.The new product has a higher strenuosity than the previous one.
   新产品的强度比之前的产品更高。