The main purpose of physical geodesy is to ascertain the outer Earth gravity field and geoid.
物理大地测量的主要目标是确定地球外部重力场和大地水准面。
An Earth gravity field model and the characteristics of gravity anomalies of China sea and its adjacent regions are summarized.
描述了地球重力场模型和中国海及邻域重力异常的特征。
The shape and perigee of artificial satellite orbits shall continually variate due to caused by the atmospherical drag and the earth gravity.
人造地球卫星的轨道由于大气阻力和地球引力场等因素的摄动，其形状和近地点位置将不断改变。
This paper deals with the application of earth gravity field model in GPS height transformation in order to decrease the demand in bench marks.
在GPS高程转换中，为了减少对已知高程点的需求量，本文引用了地球重力场模型。
The aurora display was not caused by the continuing magnetic blasts from Planet X, as auroras are caused by fluctuations in Earth gravity field.
极光的出现并不是来自于X星的持续的磁场轰炸引起的，因为极光是由地球重力场的波动引起的。
Using TOPEX altimeter data, a few new earth gravity models, geoid models and ocean tide models were generated, and these models were better than old models.
利用TOPEX资料可以得到新的地球引力场、海洋大地水准面和海潮模型。
Before earthquake occurrence, the crustal deformation causes redistribution of the earth density, so there occur some characteristic changes in the earth gravity field.
地震前，地壳变形引起地球密度重新分布，从而使地球重力场发生某些特征变化。
Based on the redundancy of spherical wavelet transformation we proved that using spherical wavelet to approximate the earth gravity field has the least square properties.
将这种方法用于卫星跟踪卫星，建立了地球重力场逼近的多尺度方法。5 .基于球面小波变换的冗余性，证明了利用球面小波进行重力位逼近具有最小。
One of the fundamental scientific objectives of modern geodesy is to determine the high precision and high resolution earth gravity field. The satellite gravity project is just for this object.
确定高精度和高分辨率地球重力场模型是现代大地测量的基本目标之一，卫星重力计划就是基于这一目标实施的。
Arrows would continue to fly forward forever in a straight line were it not for gravity, which brings them down to earth.
要不是重力使箭掉落地上，它将会一直沿直线往前飞行。
Second, the idea of an Earth that moved didn't fit in with the ancient Greeks' understanding of gravity.
第二，地球会运动的观点不符合古希腊人对万有引力的理解。
On Earth, gravity helps a plant's stems and roots to find "up" and "down".
在地球上，重力有助于植物的茎“向上”生长，根“向下”生长。
When plants shoot on the earth, their stems grow away from the gravity (the force that keeps your feet on the ground), and so they always shoot upwards.
当植物在地面上生长时，它们的茎生长得方向与重力相反（重力是让你的脚留在地面上的力量），因此它们总是向上生长。
The moon's gravity is a sixth as strong as the earth's, so Chang'e-4's experiment was a test: would the earth plants know which way was up on the moon?
月球的引力是地球引力的六分之一，所以嫦娥四号的实验是一个测试：地球上的植物能知道月球上哪个是向上的方向吗？
We here on Earth obey the same laws of light and gravity as someone in a far off corner of the universe.
我们在地球上的所依从的有关光和引力的规律同它们在遥远的宇宙角落里是一模一样的。
The poet, after all, is subject to gravity in Frost, to the force of the earth.
这个诗人，弗罗斯特，终究还是受制于地心引力，受制于地球的力量。
In this method, when one star passes in front of another, as seen from Earth, the nearer star's gravity ACTS like a lens, bending and magnifying the more distant star's light.
当天文学家用这种方法从地球上观测到一颗恒星在另一颗恒星前“走过”时，距地球较近的这颗恒星的重力就如同一个镜头，将较远的那颗恒星的光弯曲并放大。
Lockheed's plan involves using the combined gravity of the Earth and the Moon to ensure that its craft hovers on the same spot, within sight of both planets.
洛克希德公司的计划中包括利用地球和月球引力相结合，以保证两个星球看到的飞行器是在同一个点上。
Soon after taking off from Florida, LCROSS used gravity to slingshot itself into a wide orbit around the Earth that would eventually coincide with the moon.
从佛罗里达起飞后不久，LCROSS利用重力将自身弹射入一更大的绕地轨道，最终将从那里撞向月球。
That might sound confusing - seeing as how the Sun is so much bigger than the Moon, but remember - gravity decreases with distance - and the Sun is much farther away from Earth than the Moon.
听起来可能有些令人困惑——明明太阳是远远大于月球的，但请记住——引力随距离减小——比起地球与月球的距离，太阳遥远得多。
On our spherical Earth, gravity pulls "down" us toward the planet's center of mass. So on a flat surface, we naturally stand up straight.
在我们地球上，重力会把我们拉向星球的质量中心，因此在平坦的地表，我们自然站得很直。
When that light travels to a new environment, say to a telescope on Earth, where there is comparatively lower gravity, and time moves more slowly, the light's frequency will decrease.
当光运行而到达一个新的环境时，譬如到达了地球上的某个望远镜，由于地球上只有较小的引力，时间的流逝就会变慢，由此光的频率就会降低。
Gran Sasso and CERN are at different distances from the center of the Earth, so the force of gravity varies slightly between the two LABS.
由于格兰·萨索与欧洲核子研究中心，这两个位置离地球中心的距离并不一样，所以这两个实验室里的重力也稍许有所差别。
All the gravity of all the mass in the cosmos should have been pulling the universe back inward, just as gravity pulls a ball back down to Earth after it's been thrown into the air.
宇宙中每一物体的每个引力都会对宇宙产生一个指向物体本身的拉力，就像在重力作用下，抛向空中的球会被拉回地面。
But gravity lessens with distance and this means that the pull from the Moon is stronger on the side of Earth that is facing the Moon.
但是，引力随距离增大而减小，这意味着月球施加在朝向自己那一面的地球部分的拉力要大些。
For asteroids too big for a robot to handle a large spacecraft could fly near the object to act as a gravity tractor that deflects the asteroid's trajectory sending it toward Earth.
对于机器人无法捕获的较大的行星，则派一艘大型宇宙飞船接近，利用重力牵引使行星偏离轨道，飞向地球。
The planet – Gliese g – appears to have an atmosphere and gravity similar to that of Earth.
这颗行星—格里斯g—大气和重力与地球相似。
The satellite traveling in the orbit is always escaping from the earth only to be pulled back by gravity.
在轨道上运行的卫星总是要飞离地球，而结果总是被地心引力拉回来。
The satellite traveling in the orbit is always escaping from the earth only to be pulled back by gravity.
在轨道上运行的卫星总是要飞离地球，而结果总是被地心引力拉回来。
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