And this means they're subject to air resistance.
这意味着它们会受到空气阻力。
单词 | Air resistance |
释义 |
Air resistance
原声例句
PBS趣味科普 And this means they're subject to air resistance. 这意味着它们会受到空气阻力。 可汗学院:物理 You have a counteracting force, the force of air resistance, I N upward. 现在考虑更多的例子。 可汗学院:物理 This is the force of friction or you can call it air resistance. 现在考虑更多的例子。 透视百科科技类 If the ball gets too smooth, the air resistance for certain speeds goes up. 如果球过于光滑,它在一定速度下产生的空气阻力会变大。 透视百科综合类 If you watch those astronauts, they move really quickly because there's no air resistance. 如果你仔细观察那些宇航员,你会发现他们的移动速度非常快,因为没有空气阻力。 Crash Course 天文篇 Other forces act on moving objects, as well, like friction and air resistance, counteracting gravity, making this acceleration hard to see. 当然也有其他的力作用在移动的物体上,如摩擦力和空气阻力,它们抵消了部分引力,使这种加速度很难被察觉。 燎源飞轮——9月份 14. Air resistance affects the falling leaf. 14.空气阻力影响落叶。 燎源飞轮——9月份 24. The leaf, drifting slowly, showcased the effects of air resistance. 24. 叶子缓慢地飘动,展示了空气阻力的影响。 Veritasium 真理元素 Well, the reason is air resistance. 嗯,原因是空气阻力。 燎源飞轮——9月份 16. Where there is no air resistance, objects fall at the same rate. 16. 在没有空气阻力的地方,物体以相同的速度下落。 火星救援 原声版 By the time the ship's going fast enough for air resistance to matter, it'll be high enough that there's practically no air. 等到飞船的速度足够快到空气阻力影响非常大的时候,高度就已经接近真空了。 202329 This streamlined shape minimizes air resistance, allowing the falcon to reach mind--boggling speeds. 这种流线型的形状最大限度地减少了空气阻力,使猎鹰能够达到令人难以置信的速度。 202329 The voltage must build up sufficiently to overcome the air's resistance, an electrical breakdown voltage. 电压必须足够高以克服空气的阻力,即电击穿电压。 燎源飞轮——9月份 The dancer's spin slows down due to air resistance. 6. 由于空气阻力,舞者的旋转速度减慢。 燎源飞轮——9月份 30. Though we often forget, air resistance plays a role in everyday motion. 30. 尽管我们经常忘记,空气阻力在日常运动中发挥着重要作用。 Veritasium 真理元素 It all comes down to the ratio of weight to air resistance. 这一切都归结 为重量与空气阻力的比率。 Veritasium真理元素 So, you can consider the air resistance on the rope as entirely due to its motion through still air. - 因此,您可以将绳索上的空气阻力视为完全由于其在静止空气中的运动而产生。 经济学人(汇总) This ability may be unconscious, just as a dog can catch a Frisbee in mid-air without knowing how to calculate wind speed and air resistance. 这种能力可能是无意识的,就像狗能在不知道如何计算风速和空气阻力的情况下接住半空中的飞盘一样。 Veritasium真理元素 As you go up the rope, the ratio of total air resistance to weight for everything beneath increases. 当你沿着绳索上升时,总空气阻力与下方所有物体的重量之比会增加。 Veritasium真理元素 So, the rope turns more horizontal in order for the tension to balance out that increasing air resistance. 因此,绳子会变得更加水平,以便张力平衡增加的空气阻力。
中文百科
阻力 Drag (physics)(重定向自Air resistance)
![]() ![]() ![]() ![]() 阻力,又称后曳力或流体阻力,是物体在流体中相对运动所产生与运动方向相反的力。阻力的方向和其所在流场的流速方向相反。一般摩擦力不随速度变化而变化,但阻力会随速度而变化。 对于一个在流体中移动的物体,阻力为周围流体对物体施力,在移动方向的反方向上分量的总和。而施力和移动方向垂直的分量一般则视为升力。因此阻力和物体移动方向恰好相反,像飞机前进时会产生推力来克服阻力的影响。 在航天动力学中,大气阻力可以视为太空飞行器在发射时的低效率,其影响则是在发射时需要额外的能量,不过在返回轨道时大气阻力有助于太空飞行器减速,可减少减速额外需要的能量,不过大气阻力产生的热量甚至可以将物体熔化。
英语百科
Drag (physics) 阻力(重定向自Air resistance)
![]() ![]() ![]() ![]() In fluid dynamics, drag (sometimes called air resistance, a type of friction, or fluid resistance, another type of friction or fluid friction) is a force acting opposite to the relative motion of any object moving with respect to a surrounding fluid. This can exist between two fluid layers (or surfaces) or a fluid and a solid surface. Unlike other resistive forces, such as dry friction, which are nearly independent of velocity, drag forces depend on velocity. Drag force is proportional to the velocity for a laminar flow and the squared velocity for a turbulent flow. Even though the ultimate cause of a drag is viscous friction, the turbulent drag is independent of viscosity. |
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