其他鸟类在上升流中飞行时受到的阻力减小了，它们在推动自身前进时消耗的能量也减少了。
Other birds flying in the upwash experience reduced drag, and spend less energy propelling themselves.
风中振动时，刷毛会产生反作用力，但同时它也可以减少机翼滑流，产生一个低气压乱流，机翼上形成回力，因而减小阻力。
Vibrating in the wind, the bristles create some drag. But they also reduce the wing's slipstream, an area of low-pressure turbulence that pulls back on the wing, and hence reduce drag.
当两边的扰流片都扬起时，升力就会下降，阻力增加，飞机下降。
When both are raised, overall lift fall and drag increases, so the aircraft descends.
而交流电所产生的电磁力对于绕流涡街、升力、阻力的控制作用，则与所使用的频率有关。
The control effect of electromagnetic force on cylinder wake, lift force and drag force , which was caused by alternating current, is related to its frequency.
粘性是液体流层问相对运动而产生的摩擦力或阻力。油层间所产生的运动阻力称为粘性摩擦力。
Viscous friction is the fiction, or resistance to relative motion, between adjacent layers of liquid. The resistance of motion between these oil layers is called viscous friction.
由于全身血管阻力下降，瓣膜反流一直被认为对母体相对无害。
Because of the fall in systemic vascular resistance, valvular regurgitation has been regarded as relatively harmless for the mother.
利用实验室建立的旋流板塔脱硫除尘中试系统开展了各种结构参数对系统阻力损失的影响研究，为系统的放大设计提供了实验依据。
The influence of various construction parameters on system resistance is studied in a model swirl board scrubber. It can be served as a fundation for a prototype scale design.
计算了圆柱的升阻力系数、尾涡脱落频率等描述绕流问题的主要参量。
Such parameters of flow characteristics are investigated as lift and drag coefficient and vortex shedding frequencies.
采用穗流试验的方法测定492汽油机进排气系统的阻力(包括进排气管和气缸盖进排气道)。
The inlet and exhaust systems (including inlet and exhaust manifolds and ports of cylinder head) resistance of model 492 gasoline engine have been measured by the steady flow tests.
结果表明，挡流板的迎风面积是决定阻力大小的主要因素。
The results indicate that the head-on wind area of the TAB is the main factor in determining the drag size.
通过数值计算方法，模拟回转体在水下的航行，分析回转体周围流场、压强及其壁面上阻力的分布，并根据计算结果为该回转体设计了有效的微气泡减阻方案。
The flow field surrounding the revolving object, pressure and resistance distribution on its wall were calculated in order to design a micro-bubble reducing resistance scheme for the revolving object.
试验结果表明，螺旋折流板阻力只有弓形的30%，此外，在同样的压降下，螺旋折流板传热效率也提高10%。
Test results show the resistance of spiral plate is 30% of that of segmental baffle, and the heat transfer efficiency is improved by 10% at the same pressure.
利用阻力压降来检测两相流参数具有显著的优势。
It has obvious advantage to use resistance pressure drop to measure the parameter of two-phase flow.
本文在大量实验资料的基础上，对现有两相流阻力计算公式进行了分析，指出了其中存在的问题。
On the basis of numerous experimental data, the existing equations for calculating the pressure drop of two-phase flow were analyzed and their shortcomings indicated.
基于附着流状态下的旋翼非定常翼型气动模型，给出了计算该状态下的翼型非定常升力、阻力和俯仰力矩的数值计算方法。
A numerical method is given to calculate the unsteady lift, pitching moment and drag acting on an airfoil of rotors under attached-flow conditions in a compressible flow.
考虑了不同飞行攻角、不同燃料流率下气动参数，包括升力系数、阻力系数和俯仰力矩系数的变化规律。
The change rules of aerodynamic parameters including lift coefficient, drag coefficient and pitch moment coefficient have been analyzed when Angle of attack and fuel flow rate is changed.
因为沿底部运动的异重流与上部较轻的流体置换，必须产生一种力来克服边界阻力。
Because the stream moving along the bottom displaces the lighter fluid upward, a force must be provided to overcome boundary resistance.
本模型的压力波波速表达式和阻力的处理方法都体现了伪均质固液两相流的特点。
In this model, the characteristics of pseudo-homogeneous solid-liquid two-phase flows have been considered in the expression of wave propagation speed and also during treating with flow resistance.
能估算可压缩无粘流中，基本空气动力外形的升力和阻力。
Calculate the lift and drag over simple aerodynamic shapes in compressible, inviscid flows.
离心式固液两相流泵叶片的边界层的理论分析，可以为分析流体在叶片表面沿程阻力提供基础，进一步也可以为确定叶片型线提供理论依据。
The theoretical analysis of boundary layer in vane of centrifugal two-phase flow pump may provide a basis for flow drag in vane surface and a theoretical evidence to determine vane curve.
利用力平衡原理建立了料栓平衡方程序，并结合试验数据得出了预测栓流运动阻力损失公式。
An equation for calculating the pressure drop in slug flow was achieved, which is based on the experimental data and the principle of force equilibrium.
而其排导措施要注意到此类泥石流的高阻力特征，注意保证排导槽的足够坡度。
And for the debris flow drainage channel building, it is important to know the high resistance principle of slope debris flow.
计算了雷诺数为8.9 ~ 1000.0时圆球绕流受到的阻力，分析尾涡形状及长度随雷诺数的变化规律。
The drag on the sphere was calculated for Reynolds numbers8.9to1000.0, and the shape and length of the wake behind the sphere were investigated.
对用于产生螺旋管流的圆管螺旋流起旋器的结构参数进行了分析，并对其阻力特性进行了理论分析和试验研究。
The structure parameters and resistance characteristics of spiral pipe flow generator which generates spiral flow in circle pipe were analyzed and investigated.
摩擦阻力的变化趋势与速度类似，在产生逆向流处出现局部极小值。
The variation of local friction coefficient is similar to velocity and local minimum value occurred in reverse flow area.
本文计算了各种条件下绕圆柱的阻力系数、流函数涡量分布以及扰动流函数等。
The drag coefficient, the stream function and vorticity, the perturbed stream function are calculated under various conditions.
内旋流加速旋风集尘器提高了粉尘率，减少了系统阻力，防止了粉尘粘壁。
Inner vortex speeding cyclone dust collector can increase the dust collecting rate, decrease system resistance and prevent dust from adhering on the wall.
按不同流态及流区对明渠水流阻力系数的计算公式进行了归纳和总结。
The calculation formulas of the resistance coefficient in open channel flows were summarized according to different flow patterns and flow regions.
这些措施显著降低了壳程阻力和滞流区，壳程的气体接管方位可任意选定。
These measures significantly reduce the resistance and laminar flow zone in the shell side. The gas pipe connection orientation on the shell side can be freely selected.
在飞行器所在流场的下游一垂直于来流速度的截面上进行积分计算，得到升力、诱导阻力、激波阻力和总阻力。
By doing integral computation on the wake surface that is down from the aircraft and vertical to the velocity of far field, it can get the lift, induced drag, wave drag and the total drag.
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