英国首相布莱尔，中国驻英大使马振岗与伦敦中国银行总经理郑柏林。
British Prime Minister, Tony Blair and the Chinese Ambassador to Great Britain, His Excellency Ma Zhengang, with the Bank of China London Branch General Manager, Mr. Zheng Bailin.
采用霍尔斯坦和普里马科夫提出的二次量子化方法把磁振子系统的哈密顿量简化，并应用平均场理论处理了哈密顿量中的非线性相互作用项；
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.
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