The propagation characteristic of the VLF in the earth-ionosphere waveguide is analyzed by applying the FDTD method.
应用时域有限差分（FDTD）方法分析甚低频在地电离层波导中的传播特性。
Propagation characteristic of UHF radio wave in rectangle, circle and arched tunnels is studied in this paper and the computing equation for attenuation constant is deduced.
研究UHF频段的无线电波在矩形、圆形和拱形隧道中的传播特性，推导了衰减常数的计算公式。
In this paper, the sound signal characteristic of moving wheel vehicle, track vehicle and mankind is obtained by analysing the propagation characteristics of the ground.
本文通过对大地传输特性的分析，得出了轮式车辆、履带式车辆和人运动时地声信号的特征。
Aiming at weakness of the existing ultrasonic absolute positioning method and the ultrasonic propagation characteristic, the fusion method for redundancy ultrasonic information (FMRUI) is proposed.
针对现有超声波绝对定位方法不足及超声波传播的特点，提出了冗余超声波信息融合法(FMRUI)。
The distribution characteristic of the magnetic dipole field is analyzed based on the propagation equations of underwater electromagnet ic wave.
基于电磁波在海水中的传播方程，分析了海水中磁偶极子辐射场的分布特性。
AIM To study the propagation characteristic of vital signals in layered media.
目的频率域上研究生命信号在分层媒质中的传输特性。
By analyzing the characteristic of CAM grinding and the effect of microstructure on the sensibility of cracks, the mechanism of crack initiation and propagation are investigated.
针对凸轮的磨削特性及金相因素对裂纹敏感性的影响，分析了裂纹的发生及扩展机理。
In order to study laser propagation in inhomogeneous medium, Collins formula was improved by using time inversion characteristic of optic phase conjugation wave.
为了解决非均匀介质中的光传输问题，利用光学相位共轭波的时间反演特性，实现了对克斯林衍射积分公式的改进。
The propagation characteristic of acoustic wave in borehole that penetrates compact carbonate formation is analysed by doing model experiment.
本文用模型实验研究了声波在致密碳酸盐岩地层井中的传播特性。
Stress wave propagation equations that incident wave and reflection wave are condition vectors are derived from three discrete forms as well as the characteristic matrix of the force and the velocity.
推导了以顺波、逆波为状态向量的应力波传播方程和杆形部件的作用力、速度传播的特征矩阵；
The basic problem of Internet worm research is how to depict the characteristic of worm propagation accurately, which is the foundation of anti-worm research.
网络蠕虫研究的基本问题就是如何准确的刻画蠕虫传播特性，这是蠕虫防治研究的基础。
The electric characteristic parameters of package for high speed ASIC include propagation delay, characteristic impedance, cross talk, parasitic inductance and capacitance.
高速ASIC封装的电性能参数包括传输延迟、特性阻抗、信号串扰以及封装电感和电容等。
Micro characteristic of cracks propagation research: the path of crack propagation in the heat-affected zone and weld metal is the mix of transgranular and intergranular.
裂纹扩展的微观特征研究：在热影响区与焊缝区的裂纹扩展均为沿晶与穿晶混合型。
Fractal characteristic of multipath fading signal is studied in the paper which shows that multifractal dimension is a key parameter for describing the signal propagation in wireless channels.
本文研究多径衰落信号的多重分形性质，分析并指出了信号多重分形维数是描述无线信道传播特性的重要参数；
Derived from rate equations and propagation equations, the output characteristic of Er3 + -doped fiber ring laser is studied in details.
我们从速率方程和传播方程出发，对环形腔结构的掺铒光纤激光器的输出特性进行了详细的理论分析。
The propagation characteristic of nonlinear flexural wave in a prestressed beam buried inside nonlinear elastic foundation is studied in this paper.
研究了埋置于非线性弹性地基内预应力梁中非线性弯曲波的传播特性。
The propagation characteristics of this model is analyzed. Emphasis is placed on the characteristic equation of different models, the cutoff conditions and the cutoff properties of the waveguide.
分析了该模型下的传播特性，重点讨论了各类模式下的特征方程、截止的条件及波导的截止特性。
The flood characteristic of the main stream of Songhua river is that the flood is mainly from Nenjiang river, the flood hydrograph is gently, the time of propagation of flood peak is longer.
松花江干流洪水特征是：洪水主要来自嫩江，洪水过程平缓，洪峰持续时间长。
Plant pathogenic bacteria are tiny prokaryote with the characteristic of rapid propagation.
植物病原细菌是寄生在植物上的原核生物，个体微小，繁殖速度快。
The pitting propagation rate was evaluated by simulating occluded corrosion cell (SOCC), and corrosive characteristic of pits was studied by scanning electro microscopy (SEM) and EPMA.
通过模拟闭塞腐蚀电池试验研究了钢在热处理前后的点蚀扩展速度，并利用电子探针和扫描电镜分析了钢表面的蚀坑形貌。
There are many bends in mine tunnels, and it is necessary to know wave propagation characteristic in curved tunnels in order to realize wireless mobile communication of a whole mine.
实际矿井隧道有许多弯曲段，为实现全矿井的无线移动通信，需要知道在弯曲隧道中电磁波的传播特性。
There are many bends in mine tunnels, and it is necessary to know wave propagation characteristic in curved tunnels in order to realize wireless mobile communication of a whole mine.
实际矿井隧道有许多弯曲段，为实现全矿井的无线移动通信，需要知道在弯曲隧道中电磁波的传播特性。
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