查询词典 drag

Based on Prandtl's momentum transportation, this paper calculates in detail the physical quantities such as eddy viscosities, and ratio of eddy viscosity to motion viscosity, total stresses with respect to relative position in three regions of viscous sub-layer, buffer layer, and main turbulent stream for non-Newtonian fluid flowing turbulently in ducts, which according to Karman's three layer models and measurement of fluid parameters in evaluation apparatus, discusses the influence of polymer drag reduction on flowing properties of non-Newton fluid, analyzes quantitatively principle of turbulent reduction phenomenon and condition of increasing reduction rate.

摘要以普兰德动量传递理论为基础，按照卡门的三层模型，通过室内模拟环道用0号柴油及加入减阻剂在圆管内的流动参数的测定，计算了非牛顿型流体管内湍流边界层的层流内层、过渡层、湍流中心的涡流粘度，涡流粘度与运动粘度比、总应力随相对位置的变化等定量参数，探讨了高分子减阻剂对非牛顿流体流动特性的影响，对湍流减阻现象的机理与增大减阻率的条件进行了定量分析。

I pulled over to admire the beautiful neck feathers and imagined how they would look secured to a size-14 hook, drifting drag free down the Tye River on a warm afternoon in May.

我遮欣赏美丽的羽毛，颈部和想象，他们会如何看担保规模-14钩，漂流自由拖下来乳突河在一个温暖的下午。

It features complete drag-and-dropfunctionality and displays all assigned and unassigned dispatches so you can track traveling time,working time and completion dates.

该软件特别推出完善的拖拽功能以及显示所有指定和未指定的分派功能，因此你可以跟踪旅行时间，工作时间以及完成日期。

Iraq hopes a petrodollar(3) gush it will uncork by tripling oil output(4) will drag it out of chaos into prosperity, but there is just as much chance the new wealth will fuel fresh conflict.

伊拉克希望石油增产3倍带来的油元能让它摆脱混乱，进入繁荣；不过这项新兴财源也有可能为伊拉克带来新的冲突。

And because there is no engine-and therefore no low-hanging exhaust system-the car's underbody is flatter, reducing drag.

而且因为没有发动机，因此没有唾手可得的排气系统，汽车的底部平坦，减少阻力。

By focusing on the shape of the body, underfloor, wheelhouse liner and shape of the wheels, the designers of the new Toyota Prius were able to reduce the coefficient of drag value to 0.25, compared to 0.26 for the previous model.

通过对身体的，地板下，驾驶室班轮及车轮形状的形状为重点，新的丰田普瑞斯的设计者能够减少风阻系数值为0.25，比0.26前一个模式。

The pull of the undertow can drag swimmers out to sea.

近岸回流的冲力能把游泳的人涌到海里。

If you implement a drag-and-drop operation that is not undoable, display a confirmation dialog before implementing the drop.

果某个拖拽功能是不可撤销的，那么在实现放下操作前，您应该显示一个确认的对话框。

Unexpressed feelings will drag you down every time.

那些没有表达出的感受将会每次都拖你的后腿。

In the chapter three, based on the second chapter, by considering the damping effect of the neutral gas and the ion drag force on the dust particle, the electrostatic modes and their instabilities in the dusty plasma in the uniform magnetic field are investigated.

在第二章的基础上，第三章考虑了中性气体的阻尼和离子对尘埃粒子的拖拽力作用，对在均匀外磁场中的尘埃等离子体中的静电波和不稳定性进行了研究，发现中频和低频的波模是衰减的。

They go to town. Would you just ask them?

他们在城里你能问他们吗？

Ossein pretreated for a2 weeks period exhibited the maximum% yield incase of bone gelatin, while the yield from intact skin was higher than that realized incase of de-scaled skin.

预处理时间达2星期的骨胶原表现出最高的骨明胶百分产量，然而从未处理鱼皮中得到的产率比去鳞的鱼皮得到的要高。