脉动的

In response to the relationship between cavitations and wake gradient, this paper puts forward 3 kinds of calculating model of propeller exciting force , then puts the actual exciting force into pattern formula, and then obtains a new formula to predict propeller-induced hull surface pressure fluctuations by analyzing and calculating some actual ships.

在深入研究国内外螺旋桨激振力计算方法以及综合分析影响螺旋桨激振力的各种要素的基础上，根据空泡数和伴流梯度的关系，本文提出三种螺旋桨脉动压力的计算模型，将反推得到的实际激振力分别代入模型公式，应用数学统计方法对几条实船进行计算分析，得到用于预报螺旋桨表面力的新公式。

The induction motor stator-flux-oriented vector control scheme not only reduces the big dependence of its performances on the rotor parameters, such as in the rotor-flux-oriented vector control, but also eliminates the torque ripple produced by Bang-Bang control in Direct Torque Control. So the SFO vector control is a high-performance and robust induction motor control scheme.

异步电机按定子磁场定向的矢量控制克服了按转子磁场定向的矢量控制系统对转子参数的依赖性，又没有直接转矩控制中的砰—砰控制带来的转矩脉动，是一种鲁棒性良好的高性能异步电机控制策略。

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。

You touch it when you hike through the hills and stumble across the ruins of a deserted shieling.

本分工作外，我有个习惯——收杀，你能感觉到历史的气息；当徒步穿越山岭，暮然发现一座牧棚的废墟时，你能触摸到历史的脉动；当饱经岁月洗礼的石砌古堡塔楼映入眼帘时，你能注视到历史的沧桑；当激昂跃动的苏格兰边区歌谣和令人魂牵梦萦赫布里底的旋律响起时，你能聆听到历史的诉说。

Their shells, which apart from hydrogen, helium, and carbon also contain portions of the heavy elements formed in the stellar core, are inherently unstable, and their pulsing creates a withering stellar wind a billion times stronger than the solar wind we know today.

它的壳层除了氢层、氦曾和碳层外还有包含一部分产生自恒星核心的重元素，天生的不稳定，它们的脉动产生了一种毁灭性的星风，比我们现在知道的太阳风要强数百万倍。

Witte's economic reform and Stolypin's agrarian reform had influences on the social tendency in Imperial Russia at that time. Especially when people had more and more dissatisfaction with Tsar, Witte's economic reform and Stolypin's agrarian reform related with the degree of people's support to Tsar.

而维特的财经改革与史托里宾的农业改革，关系著俄国当时的社会脉动，尤其在人民对沙皇不满情绪逐日高涨的时期，两人的改革攸关人民对沙皇的支持与否。

According to flow patterns screened during common pressure experiment . The key factors that affect flow and heat transfer of the gas -liquid -liquid tempestuously mixed jet is analyzed ,the paper present a way and basic idea to describe the flow and heat transfer of the jet .

研究此时的传热现象主要采用实验研究的方法，文中根据常压实验拍摄到的流型，分析影响此气-液-液相互混合大脉动紊流的传热及流动的关键因素，提出描述此时传热和流动过程的基本概念和方法。

The influences of turbulence and surroundings,especially the unbuilt East Tower, on the pressure fluctuation and RMS of pressure are also investigated inthis paper. Wind pressures for cladding design are presented. The main contributions and results of thisstudy are summarized as follows.

本文以高度432米的广州珠江新城西塔项目为工程背景，在风洞中研究了该建筑模型的风压分布特征，详细分析了不同流场湍流度、周边建筑尤其是待建的东塔对结构表面的平均、脉动和峰值风压的影响。

Heading discover with his flick gathering on a agency activate crossways the USA, Brian fires lasers at the slug in Texas, goes angry in the inhospitable in Arizona, encounters the movement of expanse and instance at a peak section expeditionary base, tries to notice ripples in our actuality in the swamps of Louisiana and searches for unseeable dimensions meet right Chicago.

Brian带领他的摄影小组在美国四处奔走，在得克萨斯州对月亮发射激光，在亚利桑那州的沙漠中狂乐，在高度设防的军事基地中遭遇时空扭曲，在路易斯安那州的沼泽中侦测现实中的脉动，在芝加哥附近寻找那隐蔽的第四维

M/s. The following dimensionless relationships were obtained: Sh=2+0.073Re〓Sc〓〓〓 The desulphurization process by powder injection and blowing in RH refining of molten steel and its mechanism have been considered and analyzed. Based on the tworesistance mass transfer theory and the mass balance of sulphur in the system, a kinetic model for the process has been developed. The related parameters of the model have been reasonably determined. Modeling and calculations for the process by injecting and blowing the lime based powder flux under the assumed operating modes in a RH degasser of 300t capacity have been carried out using the model.

考虑颗粒与液流的相对速度，RH—PTB条件下熔池传质特性可由下式表征： Sh=2+0.073Re〓Sc〓考虑紊流中脉动速度引起的能量耗散，RH—PTB条件下熔池传质过程服从如下关系：〓将粉剂颗粒与钢液间的传质当作刚性的气泡与钢液间的传质处理，对RH—PTB过程有：〓考察和分析了RH喷粉脱硫过程及机理，基于双重阻力传质理论和体系内硫的质量衡算，建立了RH喷粉脱硫过程的动力学模型，确定了模型各有关参数，包括各传质系数和脱硫处理过程中钢液内参与脱硫反应的粉剂量等。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失