因此，双桅帆船使用三面主要的帆：与单桅帆船一致的主帆，前帆，以及尾桅帆。
A ketch therefore USES three primary sails: the mainsail and head sail, as on a sloop, plus the mizzen sail aft.
而另一方面，首先出现喙形结构和最早尾综骨(用于支持羽毛的融合尾椎骨)的孔子鸟与现代鸟类之间几乎不存在什么不一样的地方。
On the other hand, Confuciusornis, which possessed the first beak and earliest pygostyle, or fused tail vertebrae that supported feathers, truly looks like a bird.
吉儿：没啥大不了的。我通常会跟他们讲怎么走到街尾那家义大利面餐厅。
Jill: It's okay, I usually tell them how to get to the pasta restaurant down the street.
一方面，五尾狐得躲避猎人的疯狂追杀；
On one hand, the fox has to evade the hunter's crazy tracing.
异型宽尾墩是将宽尾墩底缘与溢流堰面断开形成缺口的一种墩型。
The unusual shape broad tail pier is a pier with a notch between broad tail pier and overflow weir bottom.
利用天然地震波测量Q值的主要方法有：利用地球自由振荡资料、利用体波、利用面波和利用尾波来研究Q值。
The major methods of measuring Q-value by the natural earthquakes are the ones of using the data of free vibration of earth, body wave, surface wave and coda.
螺旋桨表面和它的尾涡面离散为四边形双曲面元，每个面元上布置等强度偶极子和源汇分布。
The surface of propeller and its trailing vortex is divided into a number of small hyperboloidal quadrilateral panels with constant source sink and doublet distributions.
提出了一种尾喷管与进气道整流罩保形设计方案，既保持导弹外形特征不变，又与尾喷管内型面实现一体化保形设计。
A kind of conformal design scheme for tailpipe nozzle and inlet cowl was put forward, which not only keeps missile shape, but also realizes integral conformal design with inner contour of nozzle.
将笔者以前关于近磁尾赤道面附近的漂移气球模不稳定性工作推广到非赤道区和存在非定常地向流的情形。
Previous work on drift ballooning instability in the equatorial region has been extended to include a decelerated non stationary flow and to consider the off equator regions.
该文应用低阶速度势面元法建立了预报三维水翼水动力性能的数值方法，重点对翼梢和尾涡进行了研究。
A potential-based surface panel method is applied to predicting the performance for three-dimensional hydrofoils, with emphasis on the tip region.
杰拉尔德终于承认他不再是十几岁的孩子了，也意识到为了表现自己更专业的一面，他得剪去钟爱的鼠尾辫上传：第八号当铺。
Gerald finally acknowledged that he was no longer a teenager and realized that he needed to cut off his beloved rattail in order to display a more professional appearance.
试验给出机身对称面、翼前缘、立尾前缘等处的热流率分布。
The heat flux distribution is provided at the asymmetric side of the body, wing and the vertical fin.
对桨叶式干燥机干燥污泥提出死角改良、受热面尾缩等六个改良建议。
The heating surface, improvement of the dead angle and so on, the advise was laid out for sludge after the several experiment.
介绍了高瓦斯采煤工作面采用高抽巷抽放、尾抽巷抽放等专用巷道瓦斯抽放技术，解决了工作面初采期间的瓦斯问题。
Introduces the roadway gas drained technology for high gas mining face, it has resolved the gas control problems during primary mining face.
在高速流动条件下，叶栅损失主要是吸力面边界层径向串流及其尾迹。
Under high velocity flow conditions, cascade losses are mainly caused by radial drift of the boundary layer along the suction surface and by blade wakes.
用该方法研究了近地升力面尾涡卷起的地面效应。
The improved vortex lattice method is used to predict the ground effect on wake roll-up behind a lifting surface.
采用基于涡系理论的模型建立刚性圆柱尾迹和预定尾迹模型的升力面法预测程序，对无偏航情况的风力机性能进行了预测。
Based on the vortex theory, lifting surface method is used to establish wind turbine performance prediction model with rigid cylinder wake model, prescribed wake model and free-wake method.
工业性试验结果表明，工作面瓦斯尾巷巷道支护状况良好，底鼓问题基本得到了解决。
The result of practical experimentation indicates that the problem of floor heave in gas tail gateway having been basically solved.
主要生产和销售六角头螺栓、六角法兰面螺栓、双头螺栓、马车螺栓、组合螺钉、钻尾螺丝、全牙丝杆。
Produce and sell six head bolt, bolt, pairs of head bolt, carriage bolt the six flange, make screw up, get into tail screw, the whole tooth silk pole mainly.
探讨其运动机理以及各操纵面在尾旋进入和改出中的作用。
The mechanism of spin motion and the function of various control surfaces are explored during the aircraft entry into and recovery from, a spin.
分析了自由液面在流场绕过圆柱时的变化，并分析了自由液面对流场绕过圆柱的尾迹的影响，总结流场对不同的雷诺数和弗劳德数的变化规律。
Analysed the deformation of free surface, the influence of free surface to fluid wake, concluded the rule of fluid which changed with the Reynolds number and Froude number.
同时前尾缘冲击面换热的差别随着转速的增加将越来越小。
The difference of heat transfer between the leading and trailing impingement surfaces decreases with the rotating velocity increasing.
一方面是研究烷基改性的头-尾连接聚噻吩的物理结构。
Firstly we studied the physical structures of a regioregular poly(thiophene) modified by alkyl groups.
由测量结果可知：在双叶片叶轮内，流体基本沿叶片吸力面流动，叶片压力面上的相对速度较低，在压力面出口出现了速度很低的回流区，有明显“射流-尾迹”特征。
The results indicated that in the two-blade impeller, the fluid mainly flowed along the suction side, the velocity is very small on the pressure side, and a typical jet-wake flow has been observed.
建立了正三角形钝体尾迹流流动模型，基于冷态实验对粗糙壁面钝体尾迹流进行了求解，并与光滑壁面钝体的解进行了比较。
Mathematical analysis and numerical simulation is performed for the flow field near a rough wall based on an improved theoretical model proposed for the problem.
建立了正三角形钝体尾迹流流动模型，基于冷态实验对粗糙壁面钝体尾迹流进行了求解，并与光滑壁面钝体的解进行了比较。
Mathematical analysis and numerical simulation is performed for the flow field near a rough wall based on an improved theoretical model proposed for the problem.
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