Under the control of the Sun's gravitational force, each planet maintains an elliptical orbit and all of them travel in the same direction.
在太阳引力的控制下，每个行星都维持在一条椭圆形的轨道上，并按照相同的方向移动。
The force is always perpendicular to the direction of motion.
因为这个力总是垂直,于运动的方向。
Since it is not easy to judge the direction of force in a fall, much less the extent of force, the belayer must evaluate each situation and make use of the rock for the most secure position.
由于在降落过程中很难判断受力的方向，更不用说受力的大小，因此保护者必须对每一种情况进行估量，并利用岩石取得最安全的位置。
Clearly globalization is a complex set of partly contradictory forces. It is not, as globalization critics suggest, a single force pulling in a single direction.
很显然全球化是有些相互矛盾的力量进行一种复杂的适应。它不是像一些全球化的批评人士所说的一种力量往一个方向前行。
That means if you put an object in there that is completely immobile and you leave it in that force field, well, of course it might accelerate in some direction but it won't start spinning.
这就意味着，假如你将一固体固定在这个力场中,然后在力场中释放它，它有可能会朝向某一方向加速运动,但它绝不会旋转。
The force is always opposing the direction of increasing potential energy, so the force will drive it back and so that's why we call this a stable equilibrium.
力一直和势能，增加的方向，相反，作用力会将其推回，那就是为什么称它，稳定平衡的状态。
What Galileo had said was no actually the sledge keep going because the natural motion of things is to keep going in the same direction they are going at the same speed unless acted upon by a force.
伽利略说其实雪橇并没有继续前进，物质的自然力以相同速度，朝着相同方向运行，除非受到了某个力的影响。
People sitting next to a hole this size would face a half a ton of force barreling against them in the direction of the hole.
坐在洞旁边的人会面临半吨的力把他们往洞的方向推。
That's also important — the acceleration is in the direction of the force.
这一也十分重要-，加速度与力方向相同。
Work is defined as the product of a force and the distance through which its point of application moves in the direction of the force.
功的定义是力和力的着力点沿力的方向移动的距离的乘积。
Because of the resistive forces, because of the drag by the liquid, the object is going to get a velocity in this direction, so there's going to be a component of the resistive force opposing it.
因为阻力，因为液体中的阻力，物体的速度，是朝这个方向，所以会有，一个相反的阻力。
So, the direction of the force is going to be that of x, y, z.
所以方向是。
of the force in the x direction.
若只在y方向移动。
Here the deep shouts which proceeded from the direction of the Halles burst out with fresh force of bell and uproar.
此刻来自菜市场方面的沉闷的呼叫声、钟声和嘈杂的声音同时加剧起来。
The drag force acts in the opposite direction to the path of the ball.
阻力方向与球的运行方向相反。
The results showed that the proposal can not only control the direction and value of rotary steering force effectively, but it has a simple structure and high reliability.
作者认为，这种导向工具设计方案不但能够实现旋转导向力方向和大小的有效控制，而且结构简单，可靠性好。
The direction of motion can be changed by the action of another force on a body.
在物体上作用另一个力，可以改变物体的运动方向。
A simple device, such as a lever, a pulley, or an inclined plane, that alters the magnitude or direction, or both, of an applied force; a simple machine.
机械装置一个简单装置，如杠杆、滑轮或斜面刨，可以改变作用力的大小或方向或同时改变；简单机械装置。
The action of forcing gases out from the rear of the jet engine results in a re-active force in the opposite direction, and is commonly referred to as' thrust '.
是强迫从一个重新喷气引擎结果后，在相反方向的积极力量气体进行的行动，并且通常被称为'推力'。
Forward to the direction and the direction of the force how to?
着地的方向和受力的方向怎么样？
This can be avoided by meticulous attention to the placement of retractors and the force and direction of retraction.
密切注意牵开器的安放、力量以及牵开方向能避免这些损伤。
Some injuries can be predicted based on the direction and amount of energy force.
根据外力的走行及力度就可以预计到某些损伤的存在。
As a result of its change of direction across the blade, the steam will impart a force to the blade.
由于蒸汽通过叶片时改变方向，结果对叶片产生了作用力。
The tail reacts to that change of direction in the primary force (the ball moving), yet it is delayed due to the resistance of momentum.
尾部对主要力（球体运动）的方向变化产生反作用，只是这种作用由于动力的影响而受到了延迟。
The simulation of the valve plate has been worked, and it can be used as the direction for the design of SCCS and the unloader force.
对该系统中气阀阀片的运动规律进行了模拟，对可调回流气阀的机构和加载力设计起了指导作用。
Each subscript refers to a coordinate which represents the location and direction of a force or of a displacement.
每一脚标指的是代表一个力或一个位移的位置和方向的坐标。
Each subscript refers to a coordinate which represents the location and direction of a force or of a displacement.
每一脚标指的是代表一个力或一个位移的位置和方向的坐标。
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