quasilinear theory的用法和樣例：
例句
- In linear theory there is no difference between Eulerian and Lagrangian descriptions.
在線性理論中，歐勒描述和拉格朗日描述之間是沒什麼不同的。 - 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.
磁懸浮軸承的控制器設計通常是在平衡點附近進行線性化，按照線性理論設計線性控制器。
