一旦接合部分被融化了，剩下的事情就可以交由重力或空气摩擦力(如在飞机的机翼上的空气摩擦力)来完成。
Once the ice is dislodged, gravity or air-drag force such as on an airplane wing do the rest.
风向在城市里也会改变，因为建筑物增加了它们周围流动的空气的摩擦力。
Wind movements are also modified in cities because buildings increase the friction on air flowing around them.
它未曾变过,如果没有空气阻力,或任何摩擦力。
That never changes if there is no air drag or air friction of any kind.
一根手指的弹击足够使一个气球加速离去，当气球运动时，一点动力，甚至空气的摩擦力可以很快使它慢下来。
The flick of a finger is enough to make a balloon accelerate away. When moving, it has little momentum and even the friction of the air quickly slows it up.
这两种力量分别是，空气阻力和冰面摩擦力。
Its is actually acted upon by two forces, air resistance and friction resistance with the ice.
和轨道,总会有一些摩擦力，当然和空气也是。
There is always a little bit of friction with the track, for one thing, and also, of course, with air.
你们可以看到,有件事非常值得注意,可以注意到,方向的速度，is，that，the，velocity，in，the，x，direction,在整个轨迹当中-,如果没有空气阻力，也没有摩擦力-,是不会改变的。
Now, when you look at this there is something quite remarkable and the remarkable thing x - throughout this whole trajectory-- if there is no air draft, - if there is no friction-- is not changing.
这一层太低不适合卫星运行，因为空气的摩擦力会破坏卫星的轨道。
It is too low to fly satellites in since the friction from the small amount of air would destroy their orbits.
金刚石轴承具有在空气、油和水中摩擦系数低以及高负载率的特点，与不锈钢轴承相比一些技术方面有待提高。
Diamond bearing with the air, oil and water, low coefficient of friction and high load rate characteristics, compared with some of the technical aspects of stainless steel bearings to be improved.
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.
主要考虑了摩擦力、空气阻力等因素对弹丸的速度和轨迹的影响。
The effects of frication, air frication on the speed and trajectory of projectiles have been fully considered.
在进行高山滑雪运动时，雪板与雪地之间的摩擦力、空气阻力以及推雪阻力都是影响高山滑雪运动员滑行阻力的主要因素。
In the alpine skiing, the primary determinant influencing the skiing resistance includes the friction between snowboard and snow, the air resistance and the counterforce from pushing snow.
自动调节气压卸荷导轨利用压缩空气支承部分导轨载荷，以降低导轨面上的正压力，从而降低摩擦力。
In the automatic regulating pneumatic unloading guideways the compressed air is used to support part of the guideway load in order to reduce the normal force on the guideways.
气浮导轨是借助有一定压力的空气使工作台悬浮，并且不与导轨表面接触的一种导轨形式，工作时的摩擦力几乎为零。
Aerostatic slideways can make the worktable hanging by the aid of the definite stressed air, which don't come in contact with the slideways surface so that there isn't nearly friction working.
气浮导轨是借助有一定压力的空气使工作台悬浮，并且不与导轨表面接触的一种导轨形式，工作时的摩擦力几乎为零。
Aerostatic slideways can make the worktable hanging by the aid of the definite stressed air, which don't come in contact with the slideways surface so that there isn't nearly friction working.
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