脉动的

Under partial load conditions the draft tube 3D simulation results showed that the climax of pressure fluctuation of draft tube vortex incepted at the underside of cone part closed by bend and the frequency of the pressure fluctuation accorded with times frequency rule very well.

部分负荷工况下尾水管内三维非定常计算结果表明，尾水管涡带压力脉动最大发生在直锥段下面靠近弯肘段，并且脉动频率符合实际的倍频规律，从而验证了简化公式的正确性。

The torque ripple in direct torque control system of permanent magnet synchronous motor is analyzed. To decrease the torque ripple in PMSM DTC, a PMSM DTC system based on the strategy of modulating the time of voltage vector is proposed .

讨论了永磁同步电机直接转矩控制转矩脉动问题，针对永磁同步电机直接转矩控制存在较大脉动转矩的缺点，提出了一种模糊调节电压矢量作用时间的永磁同步电机直接转矩控制策略。

The peak values of pressure fluctuation have not high frequency in the volute.

首次分析了非设计工况下蜗壳不同截面处压力脉动分布，随着流量的增大螺旋段的脉动幅度减小。

SLon vertical ring pulsating high gradient magnetic separator is an industrial apparatus that utilizes the combined force field of magnetism,pulsating fluid and gravity to continuously beneficiate fine weakly magnetic minerals.

SLon立环脉动高梯度磁选机是一种利用磁力、脉动流体力和重力的综合力场连续分选细粒弱磁性矿物的工业设备，它具有富集比大，选矿效率高，磁介质不堵塞，设备工作稳定等优点。

A device for measurement of the hydrodynamical pressure acting on the surface of an overflow spillway is herein described, together with the method for analying the, expirmental result of the total hydrodynamical pressure.

本文介绍一种测量大面积上水流脉动压力的仪器，以及关于总脉动压力资料的整理方法。

Further, the shakedown domains in 3-dimensional loading space are obtained through investigating the axi-symmetric structures subjected to the combination of three kinds of loads, constant and pulsative internal pressure, and pulsative temperature fields.

进一步对含缺陷轴对称结构在恒定压力、脉动压力、脉动温度的共同作用进行了安定分析，得到了三维载荷空间的安定域。

The dam's stress level was lowness under the fluctuating pressure, the obvious bad influence would not take place while sluicing.

坝体在脉动水流作用下，总体来说应力水平很低，因此闸门泄水产生的脉动水流不会对坝体产生明显的不利影响。

Thus, a decoupling chamber pressure control system was designed and installed at the end of the tailpipe of a valveless self-excited pulse combustor. The relative pressure in the decoupling chamber was controlled from about -10 kPa to 10kPa through a blower, and the influence of pressure variation on the heat transfer in tailpipe was investigated.

在一台无阀自激脉动燃烧器尾部建立了去耦室压力控制系统，通过调节引风机前的阀门开度来改变去耦室内部压力即尾管出口压力大小（调节范围-10～10 kPa），实验研究了去耦室压力变化对脉动燃烧器尾管传热的影响。

The results indicate that the Sauter mean diameter is smaller and the diameter distribution is more uniformity for the droplets obtained from a pulsating flow than those from conventional atomizers.

试验结果分析表明：脉动气流频率越大、料液流量越小和料液粘度适中时雾化效果最好；采用脉动气流雾化得到的雾滴的Sauter平均直径更细，粒度重量分布均匀，。

The effects on the radial distribution of coarse particle concentration were studied by the two-fluid model.

粗颗粒浓度径向分布是流速脉动、颗粒脉动、颗粒碰撞和径向力等不同扩散作用综合作用的结果。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。