At last we experimentally detected the squeezing magnons of the ferromagnet and discuss the value of the squeezing states.
最后我们从实验上检测了铁磁体中磁振子压缩态的存在，并讨论了研究铁磁体中磁振子压缩态的用途。
2
The Cro-Magnons who left cave paintings of large animals in the monumental Lascaux cave over 17, 000 years ago were the Homo sapiens with the biggest brain.
克罗马农人曾在不朽的拉斯科洞穴留下过表现巨大动物的岩画。 这些克罗马农人是有着最大体积大脑的智人。
3
Hamiltonian of magnons system was simplified by the second quantization method presented by Holstein and Primakoff. The nonlinear interaction term of Hanitltonian was dealt with by mean theory.