例句與造句

1. The KAM theorem states that if the system is subjected to a weak nonlinear perturbation, some of the invariant tori are deformed and survive, while others are destroyed.
2. The Bohr Sommerfeld quantization conditions, used to develop quantum mechanics before the advent of Einstein's insight into EBK quantization and the difficulty of quantizing non-integrable systems was expressed in terms of the invariant tori of action-angle coordinates.
3. It's difficult to find invariant tori in a sentence. 用invariant tori造句挺難的