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。
So if we apply that concept, then we first have to know what is the gravitational force.
如果我们运用这概念，我们必须先知道，引力是什么。
Thanks to Newton's universal law, we can figure out the gravitational force between any two objects.
正是有了牛顿的万有引力定律，我们才能计算出任意两物体间的引力。
And there has to be here a force on the system, the gravitational force, which is the same as the centripetal force.
这个系统中，存在重力，和向心力相等。
And it's important conceptually because a lot of the forces are gradients of potentials, namely, gravitational force, electric force.
这在概念上很重要，因为很多力都是势场的梯度，比如重力场，电场。
This strong connection is like a gravitational force on a higher dimension.
这种强烈的关系，就好像更高维次里的万有引力。
The gravitational force acting on an object at the Earth's surface is called the weight of the object.
作用于地球表面上物体的引力，叫做物体的重量。
Newton's problem was to express in mathematical terms the gravitational force between different bodies.
牛顿的目标是要用数学形式来表示不同物体之间的引力。
The Earth's gravitational force or pull keeps us and everything else on Earth from floating away to space.
地球的引力或拉力，使我们和地球上别的任何东西都不致飘浮到空间去。
In one direction there is a constant gravitational force, in the other very many irregular blows from the molecules.
在一个方向上有不变的重力在作用，在另一个方向上则是分子的大量不规则的碰撞。
Gravitational field is a kind of vector field, and the description of gravitational force by general relativity is very effective.
引力场是一种矢量场，广义相对论对引力问题的描述是非常有效的。
At this time the Suns gravitational force partially offsets the Moons gravitational force causing lower than normal tides called neap tides.
这时，太阳的部分引力抵消月亮的引力，形成比平常还低的潮水，称为小潮。
The study results indicate that in a slender tube the influence of gravitational force and gas-liquid surface tension force can be neglected.
研究结果表明在细小管内，重力和气液表面张力的影响可以忽略。
For those of us on Earth (basically all of us, ISS-crew excepted), the moon's gravitational force is most evident in the way it influences the tides.
对于生活在地球上的人而言(所有的人，除了国际太空站的工作人员以外)月球引力最显著的表现就是对潮汐变化的影响。
Another key purpose that our moon serves is that its gravitational force stabilizes earths axis with respect to earths plane of orbit around the sun.
月球也有另一个主要功用：它的引力使地球的轴心跟地球绕太阳运行的轨道平面保持一定的倾斜度。
Obviously, borrowed soil sprayed on slope surface tends to slide or collapse under actions of rainwash, seepage, gravitational force, earthquake, etc.
显然，由于雨水冲刷、渗流、重力、地震等因素的影响，被喷播到边坡坡面上的客土存在力学稳定性问题。
This is the formula for a thick vertically faulted slab with such a large throw that the downthrow side makes no contribution to the gravitational force.
这是有垂直断层的厚板体的公式，其断层的落差是这样大，以致下落翼对重力场没有什么影响。
The paper expounds the principle and the method of measuring zenith distance for celestial positioning based on the direction of gravitational force line.
论述了在海上进行天文定位时以重力线作基准直接测定天体顶距的原理和方法。
They are the result of the rays coming from the galaxy in the background being twisted and enlarged by the gravitational force of galaxy clusters in front.
它们是背景的星系所发出的光被前方的星系团引力扭曲、放大后所产生的像。
Circle centrifugal flotation ce1l is a new high-efficient equipment for slime separation which worked by centrifugal force and gravitational force as a whole.
圆形离心浮选机是集离心力场和重力场作用于一体的有效用于细煤泥浮选的新型煤泥浮选设备。
Generally the curtain-wall glass is loaded complexly. The loads include wind-pressure (the main load), gravitational force, seismic force and temperature-effect, etc.
幕墙玻璃一般承受自重、直接作用于表面的风荷载、地震作用和温度作用等荷载的组合作用，其中风荷载是主要荷载。
Scientists have calculated Mars' gravity based on Newton's theory of gravity, which states that the gravitational force exerted by an object is proportional to its mass.
根据牛顿的引力理论，科学家们计算了火星的重力，该理论认为一个物体所产生的引力与它的质量成正比。
Try and work out the gravitational force between two objects in terms of a quantum graviton, however, and you quickly run into trouble-the answer to every calculation is infinity.
但是尝试用量子引力子解决两个物体之间的万有引力，你很快会遇到困难——每种计算的答案都是无穷大量。
For deviated wellbores, where gravitational force pulls casing to the low side of the hole, more robust solid-bladed centralizers are better if hole conditions allow their use.
对于斜井，由于重力迫使套管平躺于井壁的下侧，如果井眼条件允许，更为结实的固体刀翼式扶正器更为合适。
In an analysis of the process in which Einstein established general relativity it is found that gravitational force is a fundamental problem in nature and even the whole universe.
对爱因斯坦建立广义相对论的过程进行了分析，引力问题是自然界乃至整个宇宙世界的一个基本问题。
In an analysis of the process in which Einstein established general relativity it is found that gravitational force is a fundamental problem in nature and even the whole universe.
对爱因斯坦建立广义相对论的过程进行了分析，引力问题是自然界乃至整个宇宙世界的一个基本问题。
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