Castigliano's theorem

例句：

1. 1.This mathematical theorem has been proven to be correct by numerous experiments.
   这个数学定理已经被无数的实验证明是正确的。
2. 2. The theorem is a cornerstone of the field, and its implications are far-reaching.
   这个定理是该领域的基石，其含义深远。
3. 3. The theorem was first proposed by Castigliano in 1960, and it has since been widely applied in various fields.
   该定理最初由卡斯蒂利亚诺在1960年提出，并已广泛应用于各个领域。