chain theorem

例句：

1. 1. The chaintheorem states that the sum of the lengths of all links in a chain is equal to twice the length of the chain.
   链定理表明，一个链条中所有链接的长度之和等于该链条长度的两倍。
2. 2. In mathematics, the chain theorem is used to prove that a series of numbers can be added together without any remainder.
   在数学中，链定理被用来证明一系列数字可以相加而没有余数。
3. 3. The chain theorem has been applied to various fields such as computer science and economics, providing important insights into the structure andfunction of complex systems.
   链定理已被应用于计算机科学和经济等多个领域，为复杂系统的结构与功能提供了重要的洞见。