查询词典 ripple

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。

The simulation and experiment results show that the stator flux track is a circle, the stator current is a sine curve with few harmonics, the torque has small ripple and fast dynamic response.

仿真和实验结果证明了本文实现的全速度范围异步电机间接转矩控制方案是可行的，系统具有良好的动静态性能，在具有较高开关频率的中小功率应用场合有着非常好的应用前景。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。