拖曳力的下降，下降的表面积之间的船体和水。
The drag force decreases with decreasing of the surface area between the hull and water.
拖曳力，得到了计算的势头赤字在墙上的边界层。
The drag force is obtained by calculation of the momentum deficit in the wall boundary layer.
从土壤的冲刷起动拖曳力入手，得出了发生坡面冲刷的条件。
Through incipient motion drag force, it obtains the occurring conditions of scouring.
植被的阻碍作用反映为植被对水流的拖曳力和阻碍水流运动所做的功。
The vegetations' drag force and the work done by the force were induced to draw the effect of vegetation on the flow.
由坡面流能量、能量损失、传递及其平衡得出了坡面流对坡面上土物的拖曳力。
It can get the drag force according to flow energy, energy loss, energy transfer and its balance.
本文介绍了采金船渡汛时的停泊方向及采金船在洪水中可能产生拖曳力的估算方法。
The drag forces are the major forces that make the object move in the horizontal direction.
外弹道学是研究射弹的飞行，弹道是射弹在重力、拖曳力和升力作用下的飞行路线。
External Ballistics deals with projectile flight. The trajectory, or path, of a projectile is subject to the forces of gravity (see gravitation), drag, and lift.
本文根据作者提出的线性化方法，对于斜向波浪和水流作用下水平杆件上的拖曳力做了线性化。
Based on the linearization method presented by authors, the force spectrum on horizontal cylinder by diagonal wave and current is established.
渗流对裂隙网络岩体的作用力包括渗透静水压力和渗透动水压力(裂隙壁切向拖曳力)两部分。
Flow through fissures in rock mass applies simultaneously the normal hydrostatic seepage pressure and the tangent hauling force (the dynamic seepage pressure) on fissure walls.
天然河流大多属于非均匀流，但起动拖曳力公式和起动流速公式都是在均匀流的基础上建立起来的。
Most of the natural river flows are non-uniform, but the start and the starting velocity drag force formula for formulas are based on uniform flow up.
根据试验结果和建立的运动方程，获得阻力系数与圆管形状的关系，并计算了圆管所受到的拖曳力。
Based on the test results and movement equation established, the relationship between drag coefficient and tubular shape is obtained and the drag force imposed on pipe is calculated.
说明植物坝可以减小泥沙的起动拖曳力，降低上游泥沙的起动频率，并能使运动的泥沙在坝上游沉积下来。
These show that vegetation dam can reduce starting drag force and starting frequency of sediment in upper reaches. And can make athletic sediment deposit.
在约翰内斯堡，完全相同的射击既可能比球门飞得高也可能撞到人墙，因为更低的空气密度既降低了拖曳力也降低了旋转效应。
In Johannesburg, the exact same shot would either fly over the crossbar or hit the wall, as the lower air density reduces both drag and the effect of spin.
结果表明：由浮力项、平流项和拖曳力项触发引起的扰动气压垂直梯度力与各对应源项具有同等量级，但与其源项的作用力方向相反。
The results show that the perturbation pressure forces induced by buoyancy, velocity advection and dray are of the same order of magnitude as the corresponding resource terms and act against them.
实验研究表明，对于不同的空心块体，在相同的水流条件下，受到的水平拖曳力随块体的空心率影响较大，呈现空心率越大，水流拖曳力越小的变化规律。
The study shows that the total drags acting on a hollow block are affected by the porosity in the same flow condition , that is, the bigger the porosity is, the smaller the drag force is.
圆盘产生自己的引力拖曳，这种相互作用的力夺走了行 星在其轨道上的动量，迫使它盘旋向恒星的方向。
The disk exerts its own gravitational tug, and this interplay of forces robs the planet of momentum in its orbital path, forcing it to spiral in toward the star.
圆盘产生自己的引力拖曳，这种相互作用的力夺走了行 星在其轨道上的动量，迫使它盘旋向恒星的方向。
The disk exerts its own gravitational tug, and this interplay of forces robs the planet of momentum in its orbital path, forcing it to spiral in toward the star.
应用推荐