查询词典 dispersion

This paper, with the analysis of the propagation characteristics in a lossy cylindrical waveguide and using small-signal theoretical dispersion relation, presents study on the device stability with influence of the absolute instability and the backward wave oscillation in TE01-mode lossy dielectric-load gyrotron traveling wave amplifier.

摘要该文从分析损耗介质加载金属圆波导中电磁波传输特性出发，应用回旋行波管放大器小信号色散方程，研究损耗介质加载结构TE01模回旋行波管放大器绝对不稳定性振荡和回旋返波振荡对器件稳定性的影响。

This is a common phenomenon in semiconductors since the photon-excitation rate is the greatest at the absorption edge where the absorption index is fairly low and the dispersion is small.

激发光的主峰在吸收光谱的吸收边缘，这是由于在此条件下吸收指数相对低散射也很小，光子的激发速度最大）。

Finally, it is our most important chapter which discus the two-level systems which interacted with the Shaping-pulse dynamic progress of the absorption, dispersion and refractive index.

在后面几部分的讨论中就会发现，采用布洛赫矢量方法讨论激光脉冲同系统的相互作用，可以形象直观的从理论上观测到色散和吸收或辐射的动态演化过程，既有利于教学演示，又有助于帮助实验寻求更方便的激光整形方式。

Part: two It gives the shaping-pulse in the time field to achieve the aim of the quantum control and adopts the Bloch vector to analyses the dynamic process of the absorption, dispersion and reflection index.

这项工作的意义在于通过合适的选择调制场可以达到预期的相干控制目的。

Frequency modulation ; magnetic rotation spectroscopy ; absorption line shape ; dispersion line shape.

频率调制；磁旋转光谱技术；吸收线型；色散线型

Title: Statistical Diagnostics For The Simplex distribution Nonlinear Model Abstract:Simplex distribution is one of the reproductive dispersion models.

统计诊断是二十世纪七十年代中期才发展起来的一门统计学分支，是统计学理论与应用相结合的重要领域。

Element analysis shows that there are an abundant number of-NH〓 groups in the interlamellar region of the uncalcined APS-ZrP support, which may facilitate the intercalation and dispersion of the nickel species.

另外此前驱体在水中容易溶涨使层间距增大至3.5nm，比传统方法中载体的层间距由于事先烧过而固定为1.8nm更有利于金属离子的进入层间。

In order to let Apparent Hurst exponent be greater than 1, an accelerated fractional Brownian motion is introduced based on the fractional Brownian motion. A new particle tracking technique is established to model the non-Fickian dispersion in coastal waters.

因此本研究在分数型布朗运动的基础上，引进加速分数型布朗运动来模拟non-Fickian扩散，使表面Hurst指数可以大于1，从而建立了一种新型的粒子追踪技术，由此来模拟沿海水域中的non-Fickian传播。

The method is deployed to process the crossed dipole data, thus to identify the types of anisotropies from the dispersion characters of fast and slow flexural waves, those types include:①the coincidence of dispersion curves of anisotropic formation;②the parallel of dispersi...

用该方法处理了某井正交偶极资料，从快、慢弯曲波的频散特性中识别出各向异性的类型：①各向同性地层频散曲线重合；②固有的各向异性地层频散曲线平行；③应力引起的各向异性地层频散曲线交叉。

Objective To investigate the effects of coronary slow flow phenomenon on Pwave dispersion and QT dispersion.

目的：探讨&正常&冠状动脉的慢血流现象对P波离散度和QT离散度的影响。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。