理想介质

理想介质中电磁导波特性的FDTD分析高压输电线塔锚杆腐蚀的电磁导波信号表征

Using FDTD to study the medium Magnetostrictive Guided Wave Characterization for Anchor Rod Corrosion of High-voltage Transmission Tower

表明层状液晶体系是获取更多MB单体的理想介质。

Thus the lamellar liquid crystal system appears to be the ideal medium to acquire more MB monomers .

花岗岩介质是核废料地下处置的理想介质之一。

Granite is one of an ideal geological medium in which nuclear waste can be disposed .

本文改进了均匀理想介质的构造应力场模拟，采用变力学参数进行构造应力场的模拟，并取得了良好的效果。

This paper improves the method of simulating structure stress field , and gets a good result .

结果表明，由于离子液体[bmim]PF6同时具有极性和疏水性，因而成为萘普生甲酯不对称水解反应的理想介质。

It is shown that the polarity and hydrophobicity of [ bmim ] PF 6 made it a more unearthly reaction medium for the hydrolysis of Naproxen methyl ester .

通过一个非理想介质球对外围另一个介质球放电过程的研究，剖析了各边界面上的面电荷分布，系统耗损的焦耳热与产生磁场等问题。

Discharging process from a lossy medium sphere to a lossy medium spherical shell is investigated the distribution of the suface charge density on the interface and magnetic field induced are calculated .

盐岩作为国际上公认的能源储存的最理想介质，其内部孔隙网络的改变是盐岩储气库泄露的重要因素之一，细微的变化就会引起气体渗透率的大幅度增加。

The rock salt is the best energy storage medium by internationally recognized , and the change of the internal pore network is an important factor in salt rock gas storage leak . Subtle changes will lead to a substantial increase in gas permeability .

经典弹性数学理论是对精确遵守虎克定律的理想介质建立的，而实际大地介质是具有粘滞性的粘弹性介质，所以完全弹性波动方程不能够准确地描述地震波在实际介质中的传播过程。

The classical elasticity mathematics theory was established for ideal medium abiding Hooke law grimly , the earth medium is a viscoelastic medium with viscosity in fact , so elastic wave equation can not be used to describe the propagation of seismic waves in real media .

尤其是Cr~（4+）：YAG和Cr~（4+）：Mg2SiO4这两种晶体有望成为近红外可调谐固体激光器的理想增益介质，所以对它们的研究尤为重要。

These two crystals such as Cr4 + : Mg2SiO4 and Cr4 + : YAG will hopefully become the ideal gain medium of tunable lasers in the near infrared wavelengths , and the study of them will be the most important .

本文用有限差分光束传播法（FD-BPM）模拟并给出了基于理想克尔介质的弧形波导全光开关的开关特性曲线，分析了克尔介质中的非克尔非线性效应。

The principle of arc shape waveguide all optical switch is introduced and the switching characteristic of this kind of switch on ideal Kerr substrate is simulated by finite difference beam propagation method ( FD BPM ) . The non Kerr nonlinear optical response in the Kerr medium is analysised .

基于非理想克尔介质的弧形波导全光开关

Arc-shape All-Optical Switch Based on Nonideal Kerr Medium

如今公认盐岩体是石油、天然气储存最理想的介质。

Now salt rock is considered as a perfect medium for underground oil and gas storage .

在地震波正演计算中，常假设地下介质是各向同性的理想弹性介质或声学介质，而实际介质通常是各向异性和非完全弹性的。

In forward computation for seismic waves , subsurface media arc usually assumed to be completely clastic or acoustic .

所得光纤有望成为宽带放大和调谐激光器的理想增益介质。

The obtained optical fiber is expected to become the ideal gain medium for wideband amplification and tuned laser . 5 .

研究结果表明掺Yb3+氟磷酸盐玻璃是实现高功率超短可调谐激光器的理想增益介质。

Yb 3 + doped AFP glasses can be a good candidate for high power , ultra short pulses , tunable laser gain media .

硬币是最理想的介质，不仅很容易找到，而且铜币非常方便，能够有效吸收和发散热量。

Pennies makes an ideal medium because it is both easy to find and because copper is highly conductive and absorbs and disperses heat very effectively .

盐岩矿层由于其良好的物理力学特性，被国内外公认为是地下能源（石油、天然气）储存最理想的介质。

Salt mine is thought to the most ideal medium to store underground energy ( oil , gas ), because of its good physical and mechanical properties .

实验结果表明，所选的多模和单模光纤经数百米传输后的脉冲展宽在容许误差范围之内，说明所选用的光纤可以作为纳秒激光时间脉冲波形测试的理想传输介质。

The experiment results prove that the pulse broadening for an optical pulse propagating along several hundreds meters optical fibers contained single mode or multi-mode during propagation is allowed .

与石英光纤相比，聚合物光纤价格低廉，芯径大，连接耦合容易，是光纤局域网的理想传输介质。

Compared with the silica optical fiber , the polymer optical fiber ( POF ) is an ideal transmission medium for LAN because it has some merits such as low cost , large core diameter , easily connected and coupling .

本文利用平面波展开法从理想弹性介质的弹性波波动方程出发，结合固体理论中晶格周期函数的傅里叶展开和布洛赫定理，推导出二维声子晶体的特征方程。

In this paper , the eigenvalue equations of 2D phononic crystals were deduced from the elastic motion equation of the ideally elastic media by plane wave expansion method , during which the Fourier expansion of the crystal lattice periodic functions and Bloch theorem in solid theory were used .

可以说，将来理想的High-k介质的成功研究与应用必将极大地推动半导体技术的快速发展。

Doubtlessly , successful development and application of the future high-k materials will remarkably drive the development of the semiconductor technology .

其中半空间场地用单相介质弹性动力理论模拟，河谷中的饱和土沉积层用饱和多孔介质的Biot动力学理论模拟，河谷中的水用无黏性流体（理想流体）介质模拟。

We use the Fourier_Bessel series expansion technique with the deposits simulated by the Biot dynamic theory for saturated porous media , the half space assumed to be elastic single_phase media , and the water in the valleys simulated by perfect fluid .

理想化多孔介质霜层模型及霜层增长速率

Conceptual Model of Porous Medium Frost Layer and Its Growth Rate

正交异性理想塑性介质中平面应变裂纹尖端应力场

Plane - strain crack - tip stress fields in orthotropic Perfectly - plastic solids

讨论结果表明，可通过调整滤波器耦合槽直径的大小，得到理想性能的介质滤波器。

According to the results discussed above , an ideal dielectric filter can be acquired by changing the coupling aperture diameter .

同时，将结果与普通介质层覆盖理想金属和介质圆柱模型的近场和远场的电磁波特性进行比较，总结得出分层异向介质圆柱模型特有的规律。

The results are always compared with the near field and far field properties of an infinite long conventional material covered conductor or material cylinder .

将发射阵列视为一个发射点是对后续数据处理必要而合理的假设，而建立理想的分层介质模型是验证各种处理手段有效性的最佳方法。

For example , regarding the sending array as a sending point is the necessary and reasonable hypothesis for following data processing , and setting up ideal layered-medium model is the best means to validate various processing methods .

从岩石介质损伤的物理实质出发，探讨并建立理想脆性岩石介质的弹性损伤本构模型，进而建立了岩石介质更为一般的弹塑性损伤本构模型。

From the physical interior of damage of rock media , an elastic damage constitutive model for ideal brittle rock media is presented in this paper . Based on this model , a more general elastic-plastic damage constitutive model is then presented .

C8mimPF6&理想的载热介质

C8mimPF6 : An Ideal Thermal Storage Medium

理想的DNA筛分介质需要具备如下的特征：高筛分性能、动态涂覆能力以及低粘度。

An ideal separation medium for DNA separation should possess the following properties : high sieving ability , dynamic coating ability , and relatively low viscosity .