Taking medium as a system of nonlinear oscillator,applying the perturbation method of Liouville equation and the perturbation method of stationary state,in this paper,it obtains the change of density matrix induced by crossing of high velocity electron,which provide the basis for calculating the interrelated thermodynamical quantities further.

將介質(zhì)視為非線性振子系統(tǒng) ,應(yīng)用對劉維方程的微擾展開方法和定態(tài)微擾方法 ,得到了有快速電子穿過系統(tǒng)導致的密度矩陣的改變 ,為進一步計算相關(guān)熱力學量提供了基礎(chǔ) 。

· METHODS: Ninety-six eyes of 48 cases were given Augentropfen Stulln Mono eye-drops to treat VDT asthenopia, and the adverse reaction was observed.

目的:觀察施圖倫滴眼液治療VDT視疲勞的臨床效果。