equivalence of quadratic forms

例句：

1. 1.The two sides reached an agreement on the equivalence of their interests.
   双方就利益等价达成了协议。
2. 2. The economists argued that economic equivalence is essential for sustainable development.
   经济学家们认为，经济等价对于可持续发展至关重要。
3. 3. The company's decision to offer a discount on its products was seen as a form of equivalence in the market competition.
   公司决定对其产品提供折扣，被视为市场竞争中的一种等价行为。