Phase conjugation of backward-and forward-wave produced by degenerate four-wave mixing using a nearly resonantly enhanced nonlinearity in four-level organic dye solutions was investigated.
研究了近共振增强的四能级系统有机染料溶液中简并的四波混频后向反射波及前向波的位相复共轭特性。
Caterpillars move by a wave that starts at the back end of their body and sweeps through each segment until it reaches the head, pushing it forward.
毛毛虫移动时的每一波都是从身体的后段开始，然后这个波穿过身体的每一部分，一直到达头部，进而将整个身体向前移动。
John Mitchell, an English physicist and astronomer, was inspired by it to put forward the first theories of wave motion in the earth.
约翰·米切尔，英国物理及天文学家，由此得到灵感并提出了第一个地球内部波动理论。
When their predictions turn from cold snap to heat wave, say, it can play havoc with the forward price of gas.
当他们的预报从寒流变成暖流，可以说会使燃气远期价格陷入巨大的混乱之中。
In assigning the port hydraulic structure, the most dangerous wave to act on breakwater is not all forward wave and it is more practical to consider the action of the diagonal wave.
在港口水工建筑物布置中，最危险的波浪并不都是正向作用于防波堤的，考虑斜向波的作用更符合实际。
This article describes WAVE file, put forward a method of data compression, gives basis and results of compression, results show this method is feasible.
描述了波形音频文件的格式，提出了一种压缩波形音频文件的方法，给出了压缩依据和压缩结果，最终的结果表明压缩方法是可行的。
The experiment research on the forward scattering of airborne radar transmitted wave with airscrews is presented in this paper.
本文就飞机螺旋桨对机载雷达发射波前向散射的实验研究情况作了介绍。
A set of coupled wave equations for multiple dimensional acoustooptic diffraction with multiple acoustic waves along different directions is put forward and its solutions are derived.
本文建立了沿不同方向的多个超声波信号作用下的多维声光衍射的耦合波方程，并求出相应的解。
Walkaway VSP forward modeling is an effective tool for theoretical study and wave field identification.
变偏移距VS P正演模型是理论研究、波场识别的得力工具。
The multi polar coordinate and complex function are used to put forward an approximate analysis method for scattering of steady P wave around a circular lining in half space.
本文采用多极坐标和复变函数方法针对半无限空间中P波在一衬砌周围的散射问题提出了一种近似求解分析方法。
The study puts forward the precision difference solution to elastic wave equation, using staggered mesh random even rank, and formula for tilted contact surface's refraction blind zones.
研究提出了弹性波方程交错网格任意偶数阶精度差分解法及倾斜界面地表折射盲区计算公式。
Through analyses of found problems in traditional static correction used in complicated areas, put forward a refraction wave vertical dissection method to carry out the statics.
通过分析在复杂地区使用常规静校正处理方法所暴露的问题，提出采用折射波垂直剖分法对地震资料进行静校正。
The model of wave propagation in functionally graded material (FGM) is introduced to soil medium, and the concept of functionally graded soil medium is brought forward.
研究了将功能梯度材料中应力波传播的计算模型应用到土介质中，提出了梯度土介质的概念。
Finite element method las been practically applied to the forward modeling of elastic wave. But its shortcomings, such as large storage needed and slow calculation, remain.
用有限元法做弹性波正演模型计算已进入实用阶段，但有限元法所要求的大存储量和计算速度慢的缺点依然存在。
By analyzing the reflectivity spectrum and reflection wave spectrum of thin beds, we put forward a new method for thickness determination of the thin beds.
作者通过研究地层厚度变化对地层本身的反射系数谱及反射波频谱的影响规律，寻找到了一种新的计算薄层厚度的方法。
The essential of studying the forward and inverse problems of converted wave with the use of convolution model is to deduce recursion formula of the reflection coefficient.
利用褶积模型研究转换波正、反演问题的关键是建立转换反射系数递推公式。
It's difficult to deal with seismic acoustic forward modeling and seismic inversion for the absence of shear wave data usually.
在测井资料中，通常缺乏的就是横波资料，这给地震波正演模拟和地震反演都带来很大的困难。
The mechanism for low noise asphalt pavement to lower tyre noise is analyzed. A acoustical model is put forward. The resonance frequency of sound wave is analyzed with Helmholtz resonator model.
分析了低噪声沥青混凝土路面降低轮胎噪声的机理，建立低噪声沥青混凝土路面的声学模型，用亥姆霍兹共振器模型分析计算了声波的共振频率。
The paper puts forward a convenient and efficient method on the analysis of vibration natural frequency for ring ultrasonic wave motor stator.
本文提出了一种用于分析环形超声波电动机定子振动固有频率的简便、有效的方法。
The paper studied and analyzed the interface wave of clad plate explosive welding used average arranging explosive, then put forward the new technology of unequal thickness arranging explosive.
通过对均匀布药工艺下爆炸焊接复合板的界面波形进行理论分析，提出不等厚度布药的新工艺。
Some viewpoints about the problems existing in wave velocity testing are brought forward.
对波速测试中存在的一些问题提出了看法。
In the last part, I put forward the scheme of monolithic chip microcomputer controlled, DDS based short wave DHF frequency synthesizer.
最后，本论文提出了单片机控制的，基于DDS的短波差分跳频频率合成器的设计方案。
Finally, the dissertation brings forward the collectivity project of the negative pressure wave leak detecting system based on data transfer of wireless spread, spectrum network.
最后，结合课题提出了基于无线扩频网络数据传输的负压波法泄漏检测系统的总体方案。
It puts forward higher demand on boat-lifting device, such as adding the function of wave compensation.
这就对回收装置提出了更高的要求，如增加波浪补偿功能等。
Puts forward stress wave research method when the linear charge blasting. It regarded column stress wave as cylinder stress wave, end stress wave as spherical wave.
提出了将条形药包柱部应力波当作柱面波、端部应力波当作球面波处理的应力波研究方法。
A diagnosis method of zero-value insulator based on electromagnetic wave detection is put forward, namely partial discharge detection method jointly using UHF and HF.
提出了一种基于电磁波检测的零值绝缘子诊断方法，即联合采用基于(特高频)uhf和(高频)HF的局放电流检测方法。
Applying classical wave theory, a concept of equivalent elastic modulus on propagation speed modification of guided wave through "variable cross-section" of metal bar embeded layer was put forward.
运用波动的经典理论，提出了导波在金属杆嵌入层“变截面”传播时波速改变的“等效弹性模量”的概念。
Base on IGBT inverter for arc welding, a new current wave form control method is put forward in this paper which is special for process of short circuit transfer for CO2 arc welding.
本文针对IGBT弧焊逆变器，提出并实现了适于短路过渡CO_2气体保护焊的输出波形控制方法。
By deeply analyzing soil's consolidation theory and shock wave theory, it discusses dynamic consolidation mechanism of filling-up soil and putting forward some opinions of reinforcing filling-up soil.
通过深入分析土的固结理论和震动波压密理论，对填土的强夯机理进行了探讨，提出了加固填土的一些观点。
In the study of circuit detection scheme for the low-cost Fiber Optic Gyroscope (FOG), a closed-loop scheme for analog demodulation, square wave modulation and step wave feedback was put forward.
针对低成本光纤陀螺的电路检测方案开展研究，提出一种模拟解调、方波调制和阶梯波反馈的闭环方案。
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