除非你在空气动力学实验室工作，否则没有人知道汽车在空气的阻力下行驶时，75英里的时速比65英里要多消耗多少能量，事实是这个差距非常大。
Unless you work in an aerodynamic lab, you don't understand how much more energy it takes to push a car through the air at 75 MPH than at 65 MPH, but it's huge.
现代的飞机设计做得很好，但立足于燃料效率来看，飞机是否能设计得更符合空气动力学——降低阻力还是增加动力？
The modern airplane design works well, but from a fuel efficiency standpoint, could planes be designed more aerodynamically — to lower drag and increase lift?
的确鸟儿尾巴一样的飞机尾部改善了空气动力学性能，缓解了机体和机翼的阻力，同时还大大的增加了向上的力，缓释了由于飞机本身和货物重量而产生的向下的力。
But it was a birdlike tail that really amped up the aerodynamics, dampening the drag from the body and wings, as well as boosting the lift that lags under vehicle weight and cargo load.
如果你开着窗，根据车辆空气动力学的外形，你的车受的阻力较少。
If you keep your Windows up your car will be subject to less drag, which improves the aerodynamic profile of the vehicle.
在空气动力学上，升力是重量，推力和阻力(空气阻力)的相关的函数。
In aerodynamic terms, lift is a function of weight, thrust and drag (air resistance).
若想知道压力，则需要用流体力学的知识对出口阻力精确的计算。
If you want to know the pressure, you need to export the knowledge of fluid mechanics resistance calculations.
然而，为改进其水动力学性能和促进其实用化，尚有一些问题需要解决，例如有关三体船构型与阻力性能的关系。
There, however, are still some problems to be tackled to improve its hydrodynamic performances and promote its practical use, such as the relation between the configuration and its resistance.
对游泳技能有贡献的特质被命名为“生物力学”，因为它们涉及到身体在水中移动的阻力和有效利用肌肉力量推进这些因素。
"The qualities that contribute to swimming skill are termed" biomechanical "because they involve factors responsible for resistance of the body's movement through water e." g.
应用流体力学和工业通风原理，分析了罗茨中央真空吸尘系统的管网阻力特性；
Tube Web obstruction property of Roots central vacuum cleaning system is analyzed with fluid mechanics and industry ventilate principle.
本文利用现代流体力学计算技术，采用复合形法(COMPLEX)，对八维参量的回转体最小阻力外形进行优化设计。
Based on the modern digital technology of fluid mechanics, the eight-parameter optimum axisymmetric bodies for minimum drag are obtained by using COMPLEX method.
力学原理是动画设计的理论基础，其中重力、空气阻力、地面摩擦力以及惯性力、弹力原理在动画设计中运用较多。
Mechanics principle is the theoretic foundation of animated drawing design, especially, gravity, air resistance, ground friction force and inertia force, elasticity principle are used abroad.
运用空气动力学原理，对标枪的纵轴旋转与压强阻力、偏向力、上升力及稳定性的关系进行分析研究，以更好地指导运动训练的实践。
The paper elaborates on the relations between the revolve of Javelin and pressure resistance, deflection force, ascensus force as well as stability.
它低温耐冲击性以及优异的力学性能和良好的油气阻力。
It has low temperature impact resistance as well as excellent mechanical properties and good hydrocarbon resistance.
冲积河流阻力是泥沙运动力学中的一个重要问题。
Alluvial channel resistance is one of the most important issues in sediment transport mechanics.
通过非线性优化算法，拟合实测的Q—S曲线，可得到桩土系统的工程力学参数，并由此计算得到桩身轴力及侧摩阻力分布曲线。
Measured Q-S curve are back figured by nonlinear optimization approach and model parameters are found simultaneously, then distribution of axial force and skin friction along pile are calculated.
肌肉组织内血流量的阻力：机体的血流动力学的变化，被认为是引起运动疲劳的重要因素。
Resistance of blood flow in muscle tissue: Change of hemodynamics was considered as an important factor inducing exercise fatigue.
轨道结构与桥梁共同作用的力学计算模型是解决轨道纵向位移阻力与梁轨相对位移相互作用计算问题的关键。
The key is that to resolve the interaction between bridge and track, that the mechanics model of this interaction, as well as rail longitudinal resistance to displacement between rail and beam.
应用线弹性断裂力学的弹性能释放率及裂纹扩展阻力等基本概念和理论，建立起确定纤维增强高分子聚合物复合材料断裂韧性的能量方法。
An energy method for determining fracture toughness of fibrous composite laminates was based on the theory of elastic energy release rate and crack-growth resistance in this paper.
通过动力学分析，得到了对于单叶双曲面平板直刃滚筒式切碎器切割秸秆层切割阻力矩的数学模型，经过试验验证验证了其有效性。
Based on the mechanics analysis, the mathematical model of the cutting torque was established, and the validity of the model was demonstrated by the experiments.
先修课程要求：流体力学，船舶原理(阻力、推进部分)。
As a prerequisite the students are assumed to have knowledge in basic fluid mechanics, ship resistance and propulsion.
通过刚体理论，推导了考虑空气阻力时标枪的动力学方程组，并在不同出手参数组合的情况下对标枪的出手角进行计算和分析。
The dynamic equations of javelin with air resistance are derived through rigid body theory and the release angles are calculated and analyzed under the combination of different release parameters.
病灶局部所测血流动力学参数为收缩期峰值血流速度PS V，舒张末期血流速度(EDV)及阻力指数ri。
The hemodynamic parameters measured in the lesion locations included peak systolic velocity (PSV), end diastolic velocity (EDV), and resistance index (RI).
在建立动力学模型中，计及了地球扁球形的摄动、大气阻力、太阳辐射压的效应以及日月引力摄动。
The dynamical model included the effects of the earth non-spherical shape, atmospheric drag, solar radiation pressure as well as lunar and solar perturbations.
为计算电厂烟风道设计中常见异形件的阻力，采用计算流体动力学方法研究了典型异形件的阻力系数。
The research indicates that, the method of Computational Fluid Dynamics can calculate the drag coefficient of the irregular parts in air and flue gas ducts appropriately.
对不同桩径及不同土体力学参数情况下的桩极限阻力进行了分析，研究了桩径及土体参数等因素对桩极限阻力的影响。
Piles with various diameters and soil parameters are adopted in analyses; and the influences of these factors on the ultimate resistance of anti-slide pile are investigated.
提示急性心肌梗死患者口服氯沙坦产生外周阻力及心肌耗氧量下降，心指数增加等有益的血流动力学效应。
The results showed that oral losartan administrated to patients with ami resulted in beneficial hemodynamic effects, such as decrease of SVR and oxygen consumption, increase of cardiac index.
通过对流体力学中沿程阻力系数和泵与风机工作点等问题的求解，介绍了EXCEL单变量求解器和曲线拟合的方法。
Through calculating friction factor and operating point of pump or fun of two examples on fluid mechanics, methods using solver and curve-fitting in EXCEL were introduced.
运用散体结构力学理论，以新的方法分析垂直型埋刮板输送机物料稳定输送的条件，并导出了物料运行阻力计算式。
Bulk mechanics theory is applied to discussing conditions that vertical en masse conveyor conveys material steadily and deriving resistance to moving material.
水容是继水流阻力之后反映土壤—植物系统中水分动力学性质的又一重要水力学参数。
Hydraulic capacitance is a important hydraulic parameter to describe hydraulic dynamics of soil plant system after hydraulic resistance.
结论：血管收缩剂引起肿瘤血供增加，血液流速增快，阻力指数降低，可用于肿瘤的血流动力学研究。
Conclusion: Vasoconstrictor can increase tumor blood flow, increase flow velocity, decrease ri and it can be used in tumor hemodynamic study.
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