查询词典 wave

This paper studies the law of sedimentation in the field of stationary wave ,and investigates the formation mechanism of sand wave by a 2-D sedimentation model.

文章通过建立二维泥沙沉降模型，研究了驻波场中泥沙沉降的规律，对沙波的形成机理作了初步的探讨。

The stationary wave method is used to measure the reflectivity of RAMs and its theory is introduced briefly. The emphasis is on the measurement of permittivity by wave guide method.

介绍了吸波材料测量表征的原理与方法，并重点研究了介电常数的测量，给出了利用波导测量线测量电磁参数的方法与步骤。

This paper studies the la of sedimentation in the field of stationary wave, and investigates the formation mechanism of sand wave by a 2-D sedimentation model.

文章通过建立二维泥沙沉降模型，研究了驻波场中泥沙沉降的规律，对沙波的形成机理作了初步的探讨。

Firstly, Flow patterns which related with the characteristics of measurement have been studied with both the time series analysis and density wave theory, which lay a solid foundation for oilAvater two-phase flow measurement Then a theoretic model of oil/water two-phase flow measurement based on stationary density wave theory has been brought up.

论文首先研究了与测量特性有关的油水两相流流型问题，基于时间序列分析和密度波理论分别得到了流型表征结论，为进一步从测量的时间序列波动信号辨识流型奠定了方法基础。

When the plane wave returns and crosses the molecule, it produces an interference pattern with the stationary part of the electron wave function, like two trains of water waves crossing and forming a checkerboard disturbance.

一旦平面波折返并横越过分子，它便会与待在轨道上的电子波产生干涉图样，就像是两道水波相遇所形成的西洋棋盘般明暗交错的扰动。

Water surface wave ; stationary wave ; rectangular water trough ; optical effect

由矩形水槽里水的表面波理论导出了驻波方程，并定量研究了标准矩形游泳池中的驻波现象，计算结果与实际现象基本符合。

Using two-dimensional numerical simulation of the full hydrodynamic equations, the dynamics of the counterpropagating wave, localized traveling wave and stationary overturning convection with the weakly Soret coefficient is studied.

本文通过二维流体力学基本方程的数值摸拟，讨论了具有较弱的Soret结合的中等长高比空腔中的Counterpropagatingwave，局部行进波及定常行进波的动力特性，探讨了局部行进波的Rayleigh数依赖性及稳定性。

According to piezoelectric equation and vibration theory of quartz crystal, we studied the elastic wave＇s transmission characteristic in a AT-cut thickness-shear-vibration quartz crystal, and the frequency conditions of which quartz crystal resonator formed stationary wave in electrode district.

根据石英晶体的压电方程和晶体振动理论，研究了AT-切石英晶体厚度切变振动模式下振动频率与结构参数间的关系，以及石英晶体谐振器在电极区形成稳衡驻波的频率条件及电极区外波的传播特性。

sound velocity ; temperature ; stationary wave method ; ultrasonic wave

虽然用超声波测声速具有以上优势，但实验数据的精确度在一定程度上受到超声波信号发生器的稳定性、压电陶瓷换能器的效率、周围环境温度等因素的影响。

Lab experiments were conducted in a wind-wave flume to measure the wave steepness distribution.

1999导出的理论分布在零波陡处概率密度不为零的理论缺陷。

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％。