吕·查得里原理是判断平衡体系中平衡移动方向的极为有用的定性规律。但在大中学教学中往往把它说得过于绝对,认为吕·查得里原理可应用于任何平衡体系中。事实并非如此。现在,我们着重讨论它在应用中的局限性。 The principle of Lu Chadley is a very useful qualitative law for judging the direction of equilibrium movement in a balanced system. However, it is often said in the middle and high school teaching that it is too absolute, that the principle of Richard Chadley can be applied to any equilibrium system. But in fact, it’s not. Now, we focus on its limitations in the application.