查询词典 wave

The standard function mode is that the system's excitation functions are sine wave, square wave and curve of free little damped vibration, the vibration's frequency are about 2Hz. The vibration mode must be in accord with the crane's work status in the vision computer.

调查表明，集装箱桥机驾驶员座椅工作中更多的是小车运行方向的前后振动，所以我们的多自由度座椅振动平台采用X方向的单自由度激励，即可实现座椅振动的大部分体感功能，同时开发成本也大大降低。

To distinctly find out the relationship between the rigidity of tablet and the ultrasonic speed,laser is emitted to the tablet and then we measure the speed of reflected surface acoustic wave and analyse the experimental data,finally get the tablet rigidity-wave speed curve.

为了清楚地了解片剂的硬度与超声波速度之间的关系，利用激光照射到片剂上，通过测定出反射的声表面波速度，且对实验数据进行分析，从而得出片剂的硬度与声表面波速度之间的关系曲线。

Objective: To explore the feasibility of decimeter wave therapy in diabetic macroangiopathy through observing the effect of decimeter wave on matrix metalloproteinase-9(MMP-9) expression.

目的：观察分米波对2型糖尿病大鼠主动脉MMP-9表达的影响，探讨分米波治疗糖尿病大血管病变的可行性。

Similar to rosiglitazone, decimeter wave could decrease the expression of MMP-9 mRNA. It was suggested that decimeter wave may treat diabetic macroangiopathy.

分米波照射同罗格列酮一样能降低2型糖尿病大鼠主动脉MMP-9 mRNA的表达，提示分米波对糖尿病人血管病变有一定治疗作用。

The main direction to reduce decollation rate of yarn is to control and stabilize yarn tension, increase the yarn mightiness and reduce weakness tache rate, especially cut down the break tension and mightiness weakness point to reduce the cross rate of tension wave crest and mightiness wave trough.

由气圈理论的研究我们可以得知：降低断头率的主攻方向是控制和稳定张力，提高纺纱强力、降低强力不匀率，尤其是减少突变张力和强力薄弱环节，以减少张力与强力的波峰与波谷交叉机率。

From 1920s up to Now, various techniques and methods for wave field decomposition, propagation and migration/imaging have been well developed, such as the Kirchhoff asymptotic method, frequency-wavenumber domain phase-shift and phase-shift-plus-interpolation methods, and the one-way wave equation based phase-screen and generalized screen methods, etc.

自上个世纪二十年代至今，波场分解、传播与偏移成像技术经历了将近一个世纪的发展，形成了多种不同的方法，如Kirchhoff波动方程高频近似解方法，频率-波数域的相移(phase-shift)方法和相移-内插方法，以及在混合域中基于单向波动方程的相位屏、广义屏方法等。

Using finite difference time domain method, the electromagnetic field distribution of THz wave is simulated in a THz 2D PC splitter and by plane wave expansion method the dispersion relation and defect modes are achieved in a THz rotated PC waveguide.5. A woodpile three-dimensional (3D) PC with face-centered-tetragonal symmetry is one of the most popular 3D PCs because of its favorable band gap characteristics. Based on the woodpile fct lattice structure, we propose a novel woodpile THz lattice structure with comparatively decreased symmetry, better band gap properties and easy fabrication by varying some structure parameters.

计算结果为利用非线性光学差频方法产生THz辐射源的实验研究提供了深入和全面的理论基础；四、利用平面波展开法，通过改变二维THz光子晶体的结构参数，对二维THz光子晶体完全带隙进行了优化，分析出两种适合工作在THz波段的二维光子晶体结构；采用时域有限差分法和平面波展开法，计算出THz波在二维光子晶体"T"型分束波导，45度旋转波导中传输的电磁场分布以及缺陷模；五、Woodpile面心立方四角结构是三维光子晶体中被研究最广泛的结构之一。

This paper discusses the mechanism of the propagation of elastic surface wave,presented a method that use the tip of atomic force microscopy and beam deflexion method to on line detect the nanometer vibration of the particle in the surface wave.

本文探讨了表面弹性波传播的机制，提出了一种利用原子力显微镜微探针与光束偏转法检测纳米振动的新方法，并利用这种方法对表面波质点的纳米振动进行了实时检测。

Many natural phenomena and physical laws can be described by time dependent nonlinear differential equations, such as heat conduction equation, sound wave and elastic wave equation, reaction diffusion and convection diffusion equation, fluid and aerodynamics equations, etc.

大多数的自然现象与物理规律都可归结为与时间相关的非线性偏微分方程，诸如热传导方程、声波与弹性波方程、反应扩散与对流扩散方程、流体与气体力学方程组等发展方程。

An ideal depolarizer can be combined with a λ/2 wave-plate and a λ/4 wave-plate rotating at different angular velocities with a certain ratio.

结果表明，让两波片以不同的角速度绕光线为轴旋转，当复合波片为一个λ/4波片和一个λ/2波片组合时，只要它们的角速度满足一定的比例时，可以组合成一个比较理想的退偏器；当复合波片为两个λ/4波片组合或为两个λ/2波片组合时，无论怎样旋转都不能组合成理想退偏器。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷