脉动

One of the main causes of the noises of the modern jet plane is the strong fluctuation generated by the flows passing by the trading edge of the airfoil and the outlet of jet engine, and the mechanism of generation of noises canoed by the fluctuation has not been clear at present.

现代喷气式飞机的主要噪声源之一是在机翼的尾缘及喷流发动机的出口处，即流体流过尾缘时产生的强烈脉动，目前这类脉动产生噪声的机理尚不清楚。

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。

Pulsating combustion ; Rijke tube ; self-excited ; pulsating boiler ; combustion

脉动燃烧； Rijke管；自激励；脉动燃油锅炉

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，。

This pulse aligns with the rhythm and movement of the small chakras within the etheric body, the larger charkas of the regeneration system that sits just outside the etheric skin, and the larger chakras that spin around the etheric form.

该脉动与以太体内小型脉轮的节奏和运动、以太皮肤外更大的重生系统脉轮、以太体内旋转的更大脉轮相结盟。

This pulse aligns with the rhythm and movement of the small chakr as within the etheric body , the larger charkas of the regeneration system that sits just outside the etheric skin , and the larger chakr as that spin around the etheric form .

该脉动与以太体内小型脉轮的节奏和运动，以太皮肤外更大的重生系统脉轮，以太体内旋转的更大脉轮相结盟。

It is introduced the technological features and experimental research of pulse flash welding process using domestic-made K 900 rail welding machine .

进行了国产K900钢轨焊机脉动闪光焊接工艺的试验研究；介绍了脉动闪光焊接的工艺特点和应用前景。

In view of the characteristics of the piston pump's flow ripple, of which the amplitude is large and the harmonic frequences are high, a practical and approximate method for measuring the flow ripple of hydraulic pumps has been advanced.

本文针对较大排量柱塞泵流量脉动幅值大、频宽高的特点，提出了适应于输出通道为等过流面积或近似等过流面积液压泵的流量脉动测试的实用近似方法。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。