查询词典 progressive wave

The paper presents a linear transient solution for the solitary wave generated by a piston-type paddle in a finite flume based on the boundary condition derived by Dean and Dalrymple (1991). The wavemaker problem is simplified by decomposing the wave potential into two parts. One is the evanescent wave and the other is progressive wave. The possible solution for the evanescent wave is expressed in form of the Fourier series.

本文根据Dean与Dalrymple（1991）描述造波水槽内部之线性边界条件，将水槽内部之流速势分为振荡波与前进波以简化问题，再以Fourier级数展开，可将问题化为二非齐次常微分方程式，在给定造波初始条件的情况下即可解析有限长度造波水槽自静止开始造波一段时间后停止之线性暂态解。

Aim To study a method realizing noise control for a physical model of progressive wave in a duct.

目的 针对实际的具有行波的管道模型，研究一种降噪方案。

A small-amplitude progressive wave in a stretched string has a velocity of 10 m s-1 and a frequency of 100 Hz.

一个小幅度逐步波加长字符串的速度10米的S - 1和一个频率为100赫兹。

Based on the experimental results, the wave height of progressive wave decreases gradually with the increase of the distance of artificial reef.

量测结果显示，当波浪於潜礁上方碎波时，波高有明显的减衰现象并随著向下游传递距离增加波高减衰情况越显著。

The second feature might be the spatial wave which appears as a progressive wave in the area. The direction of the wave movment appr...

采用多维谱分析方法，探讨了各季节的南方涛动指数与气压场的振荡特性，结果表明它们之间存在准3.5年的耦合振荡，且以南方涛动变化超前气压场为主要特点，冬季更为显著。

Then by measuring the pulse wave propagation time between the progressive wave and reflected wave, we can find the relationship of the time and the blood pressure, and establish the related systolic blood pressure measurement equation.

具体方法是通过交替点亮红光和红外光获取容积脉搏波，经放大滤波及信号处理后得到加速脉搏波，通过测量其中推进波和反射波之间的脉搏波传播时间来建立与血压的关系。

In most previous investigations for the seabed-pipeline interaction, the seabed has been taken as to be elastic and generally the influences of the non-linearity of progressive wave loading and stand wave loading have been overlooked.

目前大多数研究只是考虑了管线、海床在线性推进波作用下的响应，没有考虑波浪非线性对于管线及其周围海床响应的影响，也没有考虑立波波浪荷载作用下管线及其周围海床响应。

The results show that the tidal waves in the paleo Changjiang River estuary and its adjacent area at the post-glacial transgression maximum belong to standing wave or a mixture type of standing wave and progressive wave.

此后，随着古长江河口湾被充填、长江口东进南移，长江口的潮波也逐渐转变为现今长江口的前进波型。

Finally, the model was used to investigate the characteristics of hydrodynamic and salinity distributions in the Houlong River estuary. The estuary exhibits the mixed of progressive wave and standing wave.

模式亦模拟不同上游淡水流量时，盐分入侵距离，再经由线性回归建立不同淡水流量与盐分入侵距离之关系。

Pn 2.3.3 Standing Waves or Resonances When a free progressive wave encounters a sharp change in impedance such as at an air-hardwall boundary, and if the angle of incidence is normal, then the reflected wave travels back along the original path of propagation with a 360 ° change in phase.

pn 2.3.3 驻波和共振当自由行波遇到波阻突变时，比如遇到气壁边界，若入射角度垂直于边界，那么反射波会沿原路径返回，相位变化360°。

Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

目的 探讨白细胞介素-1 β转换酶的表达，对卵巢癌细胞生物学特性的影响。

Campylobacter: This illness is the most commonly identified cause of diarrheal illness in the world.

弯曲：这种病是最常见的原因查明腹泻病，在世界上。