There are restrictions on what type of systems these techniques can be applied to, e.g., these reduction techniques do not apply to systems that are nonholonomically constrained. 這些約化方法在其可應用的系統類(lèi)型上有一定的局限性，比如其不能應用于不完整約束系統等。
There are restrictions on what type of systems these techniques can be applied to, e.g., these reduction techniques do not apply to systems that are nonholonomically constrained. 這些約化方法在其可應用的系統類(lèi)型上有一定的局限性，比如其不能應用于不完整約束系統等。
