随着他“砰”的一声在我的申根签证上盖了章，我就可以自由地在欧洲大部分地区漫游了。
With a "bang" of his stamp on my Schengen visa, I was free to roam much of Europe.
论文第二章研究了等离子体中横向扰动下的(3 +1)维弱非线性离子声波，得到了描述离子声孤波的(3 + 1)维kp方程。
In chapter two, the (3 + 1) dimensional weakly nonlinear ion acoustic wave at higher order transverse perturbations in plasma was discussed and described by the Kadomtsev-Petviashvili (KP) equation.
第二章用解析方法研究一维分子晶体电子-声子耦合系统基态中晶格非线性效应。
In chapter two we analytically study the nonlinear lattice effects for the ground state of electron-phonon interaction one-dimensional molecular crystal system.
当这位儿子朗诵博伽梵歌的第三章时，空中传来一声巨响。
As the son recited the third chapter of Bhagavad-gita, a loud sound came from the sky.
这章音乐序曲在响亮的击钹声中结束。
另外，第三章在介绍HMM模型时，实现了一个汉语四声声调的识别系统。
Moreover a mandarin tone recognition system was developed in chapter three when we presented the HMM model.
另外，第三章在介绍HMM模型时，实现了一个汉语四声声调的识别系统。
Moreover a mandarin tone recognition system was developed in chapter three when we presented the HMM model.
应用推荐