查询词典 ripple current

She lay on the bank, listening to the ripple of the stream.

她躺在河岸上，听着小河的潺潺流水声。

Further more, the main reason of the torque ripple is analyzed by simulation in the viewpoint of energy.

另外，从能量的观点仿真分析了SCLRM动态转矩波动的主要原因。

According to the change of the motor parameters, the torque ripple is analyzed based on the model .

永磁交流伺服电动机的转矩波动直接影响系统的控制精度，是最为关注的伺服性能指标之一。

So far, the main aspects studied include: the forecast of sand transport rate, the spatial distribution of sand and wind field, the mechanism of start and maintenance of sand transport, the development process of sand ripple, the influence of physical character of the sand bed on sand motion and so on.

目前的研究成果主要涉及到风沙输运的输沙率的预测、沙粒和风场的空间分布规律、风沙运动的起动机制和维持机制、沙波纹的产生和发展机制以及地表物理性质的改变对风沙运动的影响等。

There was a brief ripple along the sand, and then the cage was still again, as innocent-seeming as before.

砂子里又掀起了波纹，很快笼子就又平静下来，跟之前一样看上去一点儿危险也没有。

Disturbances with various patterns were exerted to the open channel flow in a flume to quantitatively investigate the variation of turbulence structure during sand ripple formation and its influence on sand movement and river bed evolution. The variation process of flow velocity is measured by means of ADV with sampling frequency of 50Hz.

本文通过在水槽实验中采集的流速过程数据，定量地研究了沙纹阶段明渠水流在不同形式扰动作用下的湍流结构，以及湍流结构对泥沙运动和床面演化的影响。

The result shows that the disturbances enhance the movement of sand, so that the incipient velocity of local sand will lower than that on the flat river bed and lead to instability of river bed and sand ripple consequently.

实验发现，扰动附近水流紊动大大增强，扰动促使局部泥沙在断面平均流速低于平床起动流速的情况下起动，并促使床面失稳形成沙纹。

Other springs barely ripple the sand.

另外一些温泉则只见沙子轻微浮动。

The stone "color green and yuan, qualitative leap and gold sand, chestnut, silver sand and water ripple, no less than the brook of the stone".

其石"色青而元、质润而栗、有金砂、银砂、水波纹各种，不亚于端溪之石"。

The design of aircraft hydraulic system emphasizes particularly on choice of hydraulic component, calculation of fluid self-excitation resonance, avoidance of coupling of pump's ripple frequency and natural frequency of pipeline, and layout of pipeline system, but the design of aircraft structure emphasizes particularly on calculation of stress and intensity.

飞机液压系统的设计侧重于液压元件的选择、流体自激谐振的计算、避免液压泵脉动频率与管道固有频率的耦合及管路系统的布局，而飞机结构设计侧重于应力和强度的计算。

It was just a normal day of school

那只是上学的普通一天

Which is a very good reference in this issue.

这是一个在这个问题上很好的参考。