penetration load curve

例句：

1. 1.The penetration load curve is an important factor in determining the effectiveness of a product.
   穿透负荷曲线是决定产品有效性的一个重要因素。
2. 2.The engineer used a penetration load curve to calculate the stress on the structure.
   工程师使用穿透负荷曲线来计算结构上的应力。
3. 3.The penetration load curve was used to predict the performance of the material under different conditions.
   穿透负荷曲线被用来预测材料在不同条件下的性能。