查询词典 surface drag

The effects of magnitude and distribution of the electromagnetic force on the flow around the aerofoil were investigated. The results show that the electromagnetic force with large magnitude and concentrated distribution on the surface of aerofoil is advantageous to eliminate vortex structures and boundary separation, and therefore to increase the lift-drag ratio.

同时对不同电磁力大小和分布影响翼型表面边界层流动的规律进行了探讨，其结果表明，较大的电磁力和更加集中于翼型表面的电磁力分布可以很好地消除涡结构，抑制边界层分离进而达到提高升阻比的效果。

The results show that the increase of surface friction drag and deformation temperature can effectively accelerate the densification.

结果表明，增大试样表面的摩擦阻力，并适当提高变形温度可有效促进致密化过程。

Doffer s arranged on the steering cylinder according to space envelope curve make the structure more compact, and belt track coincides more closely with the surface curve, which makes belt conveyer running drag coefficient decrease.

在一个运输系统中，以往由于运输巷道有变坡而必须用多台带式输送机搭接运输时，最适合采用本压带装置，可实现省工、省电、省设备，省安装。省电控见图

The drag force decreases with decreasing of the surface area between the hull and water.

拖曳力的下降，下降的表面积之间的船体和水。

In this model, the pressure drag force is affected by the surface tension and the shape of the liquid-vapor interface in the vicinity of the particle.

与实验数据的对比表明该模型能成功描述高温颗粒在冷却剂中的运动。

My new hull, in a flying boat will have the effect of adding a substantial amount of wing surface and reducing the parasite drag, and in a speedboat it will have the effect of lightening the craft by the amount of lift afforded by each section as it comes clear of the water.

我的新船体，在一个飞行船将有效果，加入了大量的翼面和减少寄生虫拖动，并在快艇将影响减轻船由数额升降机所提供的每一节，因为它说到明确的水。

Chapter 2: The chapter concentrates on the powerful instrument in studying the carrier transport properties—thermopower.. Starting with the base theory, the chapter discussed the thermoelectricity phenomenon in metal and semiconductor in detail, including the useful Mott formula, phonon drag effect (normal process and Umklapp process), abnormal thermopower in transition metal, two-band model, magneton scattering, and so on. To resolve the abnormal thermopower in low temperature, some theoretical models, such as the distortion of Fermi surface, resonant scattering, spin-bag model, were argued. Each of them has its limition.

第二章：对热电势这一研究物质载流子输运性质的手段进行了综述，从热电势的原理和基础理论研究开始，针对金属和半导体的热电势现象进行了详细讨论，包括研究工作中常用的Mott公式、声子曳引的正常过程和Umklapp过程、过渡金属异常的热电势现象、双带模型及磁子散射机制等等，对于低温下的异常散射机制讨论了声子曳引、费米面畸变、共振散射机制、自旋口袋模型等若干种理论模型及其局限性。

Numerical simulation and experimental research show that, when air flows over the surface of the truck, around the head of it there exists a positive pressure area which is a main contributor to the pressure-difference drag of the truck.

通过数值模拟和试验研究表明，气流在绕流汽车表面时，在汽车头部存在压强较大的正压区，该区是对汽车压差阻力贡献较大的区域。

Originating the water ascends to drag along to take, porterage etc. activity, its development process has something to do with 蛙泳 with free 泳.Appear in 1794 the relevant human body lie on the back the surface, two arms row the water backward in the side, two legs do the 蹬 of the 蛙泳 clips the operative writing jots down, so have the " versa 蛙泳" or" breast-stroke swimming backstroke" at the beginning it call.The 1902 lead the free the technique of 泳 into the backstroke,1912 the United States athlete 赫 cloth 纳 H.

起源于水上拖带、搬运等活动，其发展过程与蛙泳和自由泳有关。1794年出现有关人体仰卧水面，两臂在体侧向后划水，两腿做蛙泳的蹬夹动作的文字记载，故最初有"反蛙泳"或"蛙式仰泳"之称。1902年将自由泳技术引入仰泳，1912年美国运动员赫布纳

Based on the former drag reduction experiments of the bionic nonsmooth body of revolution models in the lowspeed wind tunnel, the simulation wind tunnel tests at the wind speed of 44 m/s were performed for the body of revolution models with the tail rectangularly disposed by three different nonsmooth structures, such as the convex dome form with the diameter/height of 1.0/0.5 mm, the dimple concave form with the diameter/depth of 1.0/0.5 mm, and the riblet form with the width/height of 1.0/0.5 mm, in contrast with the body of revolution model with smooth surface.

在前期进行的仿生非光滑旋成体模型低速风洞试验的基础上，将非光滑形态在旋成体模型上的排列方式固定为矩形布置，非光滑的尺寸固定为直径或宽度为1 mm，深度或高度为0.5 mm，在风速为44 m/s时，对布置在模型尾部的凸包形、凹坑形和棱纹形三种非光滑模型与表面光滑模型进行了对比模拟试验。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐