脉动的

In order to improve the mechanical performance and transmission efficiency of the traditional pulsed mechanical continuously-variable transmission,a novel pulsed CVT is proposed according to the linear characteristic of hypocycloid at specific parameters and by combining the planet gear transmission mechanism with the crank slide block mechanism.

针对脉动式无级变速器动力性能差、效率低下等缺点，利用内摆线在特定条件下为直线的特性，将行星齿轮传动机构与曲柄滑块机构相结合，提出了一种新型脉动式无级变速装置。

The frequency at the point of maximum amplitude is close to the blade passing frequency.

首次分析了不同轴截面的压力脉动，其脉动曲线基本相同。

The calculafion results show that the oscillating pressure in shallow water is different from that in deep water.

计算结果表明浅水脉动压力与深水脉动压力的分布规律明显不同。

At constant viscosity, by increasing the liquid flow rate, the liquid film's velocity is increased; at the same experiment condition, the frequency of the liquid film is same at the same radial direction; the air current has minimum effect on liquid film bottom flow velocity, while it has an obvious effect on liquid film surface flow velocity. The longer the distance between liquid film and the inlet, the lower the pulsatory frequency and longer the wavelength.

在粘度基本不变的情况下，随着液体质量流率的增加，液膜流动速度随之增加；在同一个实验条件下，沿圆管径向各质点的频率基本保持不变；气流场速度对液膜底层流动速度影响很小，对于液膜表面流动速度有着较大的影响；沿液膜流动方向，液膜的脉动速度逐渐增加，脉动频率降低，脉动波长变长，与报道的通过快速摄像得到的液膜发展趋势一致，证实用PDA研究液膜流动是可行的。

Wavelet transform was used to analysis the characteristic of velocity pulsated signals in SK-static mixer,which were measured by using of LDV.

以SK型静态混合器为研究对象，运用激光多普勒测速仪对管内流体的速度脉动信号进行检测，运用小波变换分析检测信号来研究其速度脉动特性。

The theoretical results show that the signal intensity not only decays with the dephasing rate of SOA but also pulsates with the delay time.

结果表明，对这种情形的非简并四波混合共轭信号强度随时间延迟τ变化表明为载流子脉动，且脉动信号以退相速率衰减。

And pulsation damper used simultaneously, the pulsation damper to be an in between pumps and back-pressure Bellows Seal Valves valve in order to absorb the pump and back-pressure valve between the flow peak.

与脉动阻尼器同时使用时，脉动阻尼器应安在泵与背压阀间，以吸收泵与背压阀间的流量峰值。

PDA(particle dynamics analyzer system) was used to measure the flow velocity of particles in the XFD-12 flotation cell, the results show that tangential mean velocity in the radial direction changes from positive to negative in the flotation cell, naught point emerge in the medium of the radial direction ,it is where backward fluid emerge ,shear stress of backward fluid induce the particle detachment from bubbles .

汁算数据与实际矿石筛析结果都表明，紊流强度增大，泡沫中粗粒级含量减小。 4。用PDA在XFD-12型8L浮选机中测定的速度值，进行混合区、分离区、泡沫区紊流运动功率谱计算，得紊流脉动频率，混合区小于20Hz，分离区在20-30Hz之间，泡沫区在25-35Hz之间，浮选槽内紊流脉动以低频为主，且紊流脉动动能是混合区大于分离区大于泡沫区。

The article also use Matlab to simulate wind speed time-history from Davenport spectrum,use a long-span space lattice truss of some coal-fired power plant to make wind vibration analysis,which based on frequency and history method.

以Davenport脉动风速功率谱为目标谱，利用Matlab模拟出脉动风速时程，并以某电厂大跨度网架为例，分别在时域及频域内对其进行风振分析，并将上述两种方法进行比较，验证计算方法的可靠性。

On the basis of analyzing the factors affecting the stability on pulse combustion heating furnace,based on the zero-dimensional thermal model of heating furnace system,the system simulation model is founded.

在对脉动燃烧加热炉稳定性影响因素分析的基础上，基于脉动燃烧加热炉零维热力模型，建立系统仿真模型。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。