查询词典 cascade

Performance of the cascade airfoils was evaluated based on the two dimensional Navier-Stokes equations.

叶栅的气动性能通过求解二维Navier-Stokes方程获得。

The plasma ignition threshold of metal is got through experimental and numerical study. The vapour and plasma ignition times of the target are got based on the equation of heat conduction and cascade model. We suppose that the plasma is ignited when generations of new electrons are born in vapour generation time. The influence of temperature on the thermodynamics and optics parameters of material also have been considered in the model. The resulting theory has good agreement with the experiment and overseas report. A blade method to measure the laser spot is given in this paper with validation and error analysis. The plasma threshold of metals in atmosphere and water ambients both are diagnosed with the light deflection and piezoelectric transducer. A Q-switched pulsed Nd:YAG laser operating at infrared (1064nm), visible(532nm) and ultraviolet (355nm) wavelengths has been used. Al、Fe、Cu are used as targets and get a similar results with both method. Theoretical and experimental analyses are applied on the influence of wavelength on the threshold have been done, both of which have shown that the plasma threshold of metals decrease as the laser wavelength increases; The plasma threshold of metals are higher in water than in air and the pressure of the shock wave in water is five times higher than in air .

从热传导方程和雪崩电离机制出发，假设当电子增值210倍时，考虑了温度对材料热力学和光学参数的影响时，得到了气化和等离子体点燃的时间，利用该模型进行计算得到的结果与国内外报道及自行通过实验测得的阈值基本一致；提出了利用刀刃法测量激光光斑面积的方法，并通过实验进行了验证和误差分析；利用光偏转装置和压电换能器分别对空气和水中金属等离子体点燃阈值进行了实验诊断，激光器均为调Q－YAG激光器（波长1064nm，532nm，355nm，脉宽10ns），靶材分别为Al、Fe和Cu，两种测试方法得到的等离子体点燃阈值基本一致；本文从实验和理论计算两个方面讨论了波长对等离子体点燃阈值的影响，均得到了等离子体点燃阈值随著波长的增加而减小的结论；对空气中和水中不同环境下金属等离子体的点燃阈值进行了比较研究，得到了金属在水中的等离子体点燃阈值比空气中的大，且水中产生的冲击波的压强是空气中的5倍左右的结论。

Guests are welcomed into JIA Shanghai by Fu's stunning 'Cascade' installation set in a two-storey space where haute heritage birdcages are suspended from the ceiling above an undulating Chinese black lacquered sculpture.

宾客步入大堂，即会被迎面的Andre Fu精心设计的「瀑布式」摆设震慑。摆设由一大片古董鸟笼组成，由两层楼高的天花板悬垂而下，与置于其下的波浪形黑釉雕塑遥相呼应。

The people immediately moved five hundred, then a thousand militiamen to the peaks of a narrow pass known as Sheng Fulin, and every other day rained down a cascade of birdshot on the convoys slowly struggling through the pass.

民兵就在一处叫生福岭的狭隘山口设下埋伏，开始埋伏了五百人，后来又增援至一千人。当敌人的运输车队艰难地通过山口时，民兵们鸟枪齐放，子弹像瀑布一样向敌人倾泻下来。

In 1982 a cascade of computers beeped and blipped their way into the American office, the American school, the American home.

年， 计算机势如破竹的占领了了美国的办公室，美国的学校和美国的家庭。

Three types of interactions in nuclear collisions—preliminary nucleon-nucleon pro cesses, intranuclear cascade and interactions between secondaries— are investigeted in a union hydrodynamic framework.

将核—核碰撞中的三种相互作用：初级核子—核子过程、核内级联效应以及次级粒子之间的相互作用统一用流体力学处理。

Jenkins, an archaeologist at the University of Oregon found these human coprolites, or fossil feces, in Paisley Caves in the Cascade Range of Oregon.

Jenkins带领了，俄勒冈的大学的一位考古学家发现了这些人的coprolites或者化石排汇物，在俄勒冈的小瀑布范围的佩兹利洞。

Under the support from the CNSF, our group has been working on the accelerator scheme study based on the high intensity cyclotrons. The goal is to obtain beam power of 10 MW by a cascade of cyclotrons, e.g. 10 mA in beam current and 1 GeV in energy.

本基金项目开展了高功率强流质子回旋加速器的调研、方案研究和一些加速器物理问题的研究，也开展了研究内容相近的-散裂中子源的高功率质子加速器的研究，取得了多方面的研究成果。

It is now known that seere hypoxia-ischemia may not cause immediate cell death, but may precipitate a complex biochemical cascade leading to the delayed deelopment of neuronal loss. These phases include a latent phase after reperfusion, with initial recoery of cerebral energy metabolism but EEG suppression, followed by a secondary phase characterized by accumulation of cytotoxins, seizures, cytotoxic edema, and failure of cerebral oxidatie metabolism from 6 to 15 h post insult.

现在认识到严重的局部缺氧有可能不立即引起细胞坏死，但是可能促成一种复杂的生化级联反应，这可能导致神经元丢失，进而导致延缓发育，这些时期包括再灌注后的潜伏期，该期出现早期的脑能量代谢复苏但脑电图却呈抑制状态，紧接着第二期表现为损伤后6－15个小时细胞毒素，癫痫，细胞毒性水肿，脑氧化功能衰竭的累积。

In this study, we investigated whether calcium-dependent kinases were involved in ERKs cascade activation after global cerebral ischemia.

方法采用四动脉结扎诱导大鼠前脑缺血，用免疫印迹的方法观察几个钙依赖性蛋白激酶含量及活性的变化。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。