closed differential form

例句：

1. 1. The engineer used a closed differential form to solve the problem.
   工程师使用闭合差分格式解决了这个问题。
2. 2. In mathematics, a closed differential form is a function that can be differentiated without changing its value.
   在数学中，闭合差分形式是一个可以微分而其值不变的函数。
3. 3.The closed differential form is often used in physics and engineering to model complex systems.
   闭合差分形式在物理学和工程学中常被用来模拟复杂的系统。