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Some asymmetric vortex solutions are obtained, which yield the side forces and yawing moments having the order of magnitude agreeing with experimental data.

本文获得了大迎角旋转体在不同非对称边界条件下的非对称解,其中一些非对称解的侧向力和偏能力非符合实验数据的量级。

So a vortex induced by an electrical discharge is a candidate for the carrier of ball lightning.

我已表明了形成,从一个电器放电,所以诱导电气放电是一个候选人为载体球闪电,又一批在巴西这里融化一块硅晶片中的一个弧形的焊工和得到焕发出球反弹大约为最多8秒。

Results show that the heavy rainfall event occurred under the favorable environmental conditions, resulted from the interaction of mid-and low-latitude systems. The mesoscale convergence and the mesoscale low triggered the occurrence of the heavy rainfall. Rain clusters bringing the heavy rainfall were related to meso-β systems. The meso-β mesoscale rain clusters appeared to the north of the cyclone center on 1000 hPa after filtering and to the south of the meso-α convergence line on 850 hPa.

分析表明:暴雨发生在高低空流场及中低纬系统配置非常有利的天气背景下,是多种尺度天气系统相互作用的结果;在对流性不稳定层结中,冷空气沿等熵面侵入到中尺度辐合系统中,激发了中尺度低的迅速发展,在孟加拉湾和南海源源不断输送的水汽配合下,导致了暴雨的发生;中β尺度对流雨团发生在滤波后1000 hPa 等压面的低中心北侧和850 hPa 中α尺度辐合线南侧,呈现暖式切变的降雨特征。

One is the three different streamtube-methods which are single-disk single-streamtube, double-disk single-streamtube and multi-streamtube method based on the momentum theory, the other is the vortex method based on the potential eddy theory.

一是根据动量定理的流管模型得到的求解诱导速度的单盘面—单流管方法、双盘面—单流管方法、多流管方法;二是根据势理论得到的求解诱导速度的的方法。

The experimental results showed that this dissertation has certain practical importance for qualitatively analyze draft tube pressure fluctuation.

对引起尾水管带压力脉动的转轮出口环量计算公式进行了简化,也对描述压力脉动两个主要特征参数频率和振幅的计算公式做了尝试性的简化推导,并且通过实例计算说明,本文所做的尝试性的工作,为定性分析尾水管带压力脉动特性有一定的实用价值。

On the contrary, the opposite pattern occurs when the AACEF is stronger.(3) On interannual timescale, the changes in the SH Ferrel cell lead to the anti-phase variation of the subtropical high and the circumpolar low, i. e., the Antarctic oscillation .

研究发现,当夏季南极涛动偏强时,南极极和高纬度的西风急流强度都偏强,但中低纬度西风急流的强度偏弱;反之,当南极涛动偏弱时,南极极和高纬度西风急流强度将偏弱,中低纬度西风急流强度将偏强。

The main conclusions are those:(1) the cause of hot-dry climate before elevation of plateau is that the efficiency of atmospheric heat engine is lower than after the elevation owing to flatter global landform;(2) at the beginning of Oligocene Epoch,the horizontal scale of plateau reached the cr...

主要结论:(1)高原隆起前的干热气候是由于隆起前全球地势平坦,致使大气热机效率很低之故;(2)渐新世初高原的水平尺度达到了斜压大气地转适应的临界尺度,大气环流从南北两极&两对峙&突变成地球三极的&三鼎立&,气候发生突变;(3)分析了2.5Ma时高原抬升到2000m这一重要临界高度后大气环流的一系列相应变化;(4)计算、比较了最大冰期地气系统能量平衡与现代的差异,并由此分析了当时的气候状况

The results indicated that the axial velocity distribution of the mixture was a parabola-like curve along the radius and the change of the velocity was larger in the region within 0%~25% of the pipe width (about 15 mm) from the pipe walls, but smaller in other positions. The vortex changed greatly in the region within 0%~16.7% of the pipe width (about 10 mm) from the pipe walls and then decreased gradually to zero at the pipe center.

结果表明,混合颗粒的轴向速度呈类似抛物线状分布,在靠近管壁约0%~25%管宽范围内,即在试验装置距管壁约15 mm范围内,轴向速度变化较大,其他位置处变化较小;量在靠近管壁约0%~16.7%管宽范围内,即在试验装置距管壁约10 mm范围之内变化明显,从距离管壁10 mm到竖直管中心量逐渐减小到接近为零。

The Ionic, distinguished by the scrolls, or volutes, on its capital, resembles a capital I.

爱奥尼亚柱式形似字母I,最显着之处在于柱头上方有形或卷形装饰。

The Ionic, distinguished by the scrolls, or volutes, on its capital, resemble s a capital I.

爱奥尼亚柱式形似字母I,最显着之处在于柱头上方有形或卷形装饰。

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With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务,乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐,因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。

Closes the eye, the deep breathing, all no longer are the dreams as if......

关闭眼睛,深呼吸,一切不再是梦想,犹如。。。。。。