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- threshold wave number 阈波数
- There is an indefiniteness in the wave number that is related to the finite length of the train. 由于波到的长度是有限的，因此相应地在波数上存在着不确定性。
- The imaginary component of Bloch wave number can serve as a measure of the localization degree of the surface electron states. 表面电子态的局域程度可以用布洛赫波数虚部来表征。
- The critical wave number and critical wave velocity increase under the cocurrent shear and decrease under countercurrent shear. 正向 剪切力使临界波数和临界波速增大，反向剪切力使其减小；
- The R of the transversely isotropic matrix model is larger than isotropic model if the final wave number of the two model are the same. 当最终的波数相同时，介质在振幅加强方向弹性模数减弱的情形所得到的R值，会比等向性材料的情形所得到的R值高。
- Our results also indicate that the imaginary component of Bloch wave number can serve as a measure of the localization degree of the surface electron states. 此外 ;研究表明布洛赫波数的虚部可以作为一个衡量表面电子态局域程度的物理量 .
- Based on the theory of Zeeman effect and free spectral range of Fabry-Parot etalon, asimple method for measuring wave number defference and specific charge is designed. 根据原子光谱线在外磁场中的分裂特点和法布里-珀罗标准具的自由光谱范围，导出了一种在塞曼效应实验中测量分裂谱线波数差和电子荷质比的简单方法，并给出了应用实例。
- photoelectric threshold wave length 光电阈波长
- The calculations show that in the low wave number band, the outer surface is stable, while the feedthrough growth on the inner surface is rapid, resulting in the observed pha. 利用小扰动分析法,导出不可压缩球壳结构的馈通增长方程,数值模拟了高压气体驱动外表面有初始扰动的明胶球壳的瑞利泰勒不稳定性模型。
- Computational examples are presented, and the influence of wave number and wave incidence angle on dynamic stress concentration factor (DSCF) is discussed. 通过算例给出了浅埋圆孔动应力与入射波数、入射波角度的变化规律。
- The numerical simulation shows that the modal wave number tomography can be used to invese the average SSP of the cold water mass. Therefore,it shows potential for monitoring ocean internal structure which is range dependent. 数值模拟结果表明 ,简正波波数层析可以用于反演平均声速剖面 ,特别在监测与距离有关海洋环境的声速结构方面大有潜力。
- It is also found that there are multiple Solutions of the propagating mode with imaginary transverse wave number for certain component parameters, and the mode has the high-frequency cutoff. 此外，还发现当分量参数满足一定条件时，出现了多个虚横波数的传输模式解，并且该模式存在高频截止。
- The cabin has a flat stone for a threshold. 这间小屋用一条扁平的石头做门槛。
- The treaty will be the threshold of lasting peace. 这个条约将成为持久和平的开端。
- He was on the threshold of his career. 他的事业刚刚起步。
- The cutoff wave numbers and distribution of field components of the high-order modes are calculated by those formulas. 根据这些公式可求出各模式的截止波数和相应的场分布。
- He had never crossed the threshold of a bar before. 他过去从未进过酒吧的门。
- Parametric biquadratic equation whose roots are characteristic wave numbers is obtained after setting the determinant of eigen matrix to zero. 特征波数的计算涉及到张量运算、矩阵运算、公式化简等。
- Then at each of a set of discrete spatial wave numbers, an isoparametric finite-element method is used to obtain the total filed directly. 然后对目标区域进行剖分，针对每一个波数，采用等参有限元法得到离散化电磁场方程，求解方程获得走向方向上的电磁场响应；
- Scientists are now on the threshold of an important discovery. 科学家们很快就会有一项重大发现。
