linear theory的用法和样例：
例句
- In linear theory there is no difference between Eulerian and Lagrangian descriptions.
在线性理论中，欧勒描述和拉格朗日描述之间是没什么不同的。 - The usual design of the magnetic controller always linearizes around the balance point and bases on the linear system theory to design the linear controller.
磁悬浮轴承的控制器设计通常是在平衡点附近进行线性化，按照线性理论设计线性控制器。
