Satellites require the support of earth-based TT&C systems.
卫星运行需要地面测控系统的支持。
Although tachyons have never been seen in earth-based laboratories, mathematically they can exist .
尽管在地面的实验室中，从来没有发现过超光子，但从数学上说，它是可能存在的。
"Even in the best scenario of supply, these [rare earth-based] magnets are very expensive," Mr. Crane said.
“即便是供应情况最好的时候，利用稀土材料制成的磁钢也是非常昂贵的，”Crane说。
SOFIA will complement the Hubble, Spitzer, Herschel and James Webb space telescopes and major Earth-based telescopes.
索菲亚将弥补诸如哈勃、史匹哲、赫歇尔和詹姆士·韦伯一系列天文望远镜以及主要的地面望远镜的不足。
And thanks to its vantage point in space, the craft's telescope can obtain much clearer images than Earth-based instruments.
由于它在宇宙空间中的优势位置，与位于地表的设备相比，太空中的望远镜可以获得更清晰的图片。
The difficulty is the viewing geometry that puts any Trojan, from the perspective of an Earth-based telescope, in bright skies.
观测特洛伊小行星的难点在于，在通过地面望远镜观测时，几何角度总是使其位于明亮的天空中。
That is easier said than done. The number of spots falls as a star ages. Combined with the difficulties of Earth-based astronomy.
说起来容易但做起来难。随着恒星的衰老，其阴暗斑点的数量也随之下降。再加上基于地球的天文学研究所遇到的困难。
Laser propulsion is a new concept in which an Earth-based beamed energy from long distance is used to supply the propulsive energy.
激光推进是一种由远距离传输的地基定向能提供推进能量的新概念。
Any search for extraterrestrial life relies on Earth-based assumptions, and those the researchers made are at least sound, she said.
她说任何对地外生命的探寻都依赖于以地球为基础的假设，而研究人员所做的这些假设至少是正确的。
A second opponent charges immediately following the first opponent's defeat, and Korra continues to use earth-based forms to counter his attacks.
第一名对手被打飞后，第二名对手迅速而至，柯菈继续用御土术招呼他。
Earth-based measurements suggest there is a large unaccounted-for surface “sink” of atmospheric carbon dioxide, but its location is fiercely debated.
地面测量数据表明，地表存在一个未被考虑到的大型二氧化碳“吸收槽”，但是关于它的位置还存在很多争论。
As the key material of nickel metal hydride batteries, rare-earth-based hydrogen storage alloy is one of the few alloys which are still widely used.
作为镍氢电池的关键材料，稀土系贮氢合金是目前为数极少的实用化合金之一。
But the researchers say elderly patients could also benefit from their research. "We're always looking for Earth-based applications," Paddon-Jones said.
但是研究人员说，老年病人也可以从这项研究中获益。
In this case, a leading possibility is that the signal originates from an unusual modulation between a GPS satellite and an unidentified Earth-based source.
在这种情况下，最主要的可能性是这道信号来源于一个一颗GPS卫星和未确认的地球发射源之间的不寻常的调制信号。
The MUOS Ground System provides communications and controls interfaces between the MUOS satellites and U.S.Department of Defense Earth-based communication networks.
MUOS地面系统在MUOS卫星和美国国防部地基通信网络之间提供通信和控制界面。
The MUOS Ground System provides communications and controls interfaces between the MUOS satellites and U.S. Department of Defense Earth-based communication networks.
MUOS地面系统在MUOS卫星和美国国防部地基通信网络之间提供通信和控制界面。
The MUOS Ground System provides communications and controls interfaces between the MUOS satellites and U. s. Department of Defense Earth-based communication networks.
MUOS地面系统在MUOS卫星和美国国防部地基通信网络之间提供通信和控制界面。
"We have set out from the start to treat the Mars data no different to how we would treat [standard British mapping] data or any other Earth-based geography," he said.
打从一开始，我们便像处理标准英国地图数据或任何其它地球地形一样对火星数据进行处理。
One of those robotic devices, after maneuvering to a suitable location with guidance from Earth-based controllers, will use a mechanical arm to scoop up a sample of lunar soil.
那时，将有一种机器人设施，能够根据地球基站控制人员的指令寻找到适当的位置，用机器手攫取月球表面风化层泥土材料样本。
In the terminology of the Spatial Extender, this is the Spatial Reference system (SRS), a combination of an earth-based coordinate system and a set of numeric conversion parameters.
在Spatial extender术语中，这是SpatialReferenceSystem (SRS)，它组合了基于地球的坐标系和一组数字转换参数。
Organized by the New York-based nonprofit Earth Pledge, the show inspired many top designers to work with sustainable fabrics for the first time .
该展览由纽约非营利性机构“地球誓言”组织，它激励了许多顶级设计师第一次使用可持续性面料。
Organized by the New York-based nonprofit Earth Pledge, the show inspired many top designers to work with sustainable fabrics for the first time.
该展览由纽约非营利性机构“地球誓言”组织，激励了许多顶级设计师首次使用可持续面料。
The UTM system divides the Earth into 60 zones, each based on the Transverse Mercator projection.
UTM系统将地球分为60 个区，每个区基于横轴墨卡托投影。
These latter are based on the position of our earth with regard to the sun.
气候的基本规律跟地球与太阳的位置密切相关。
My first reaction was something like "holy shit, why on earth would anything like a wiki based encyclopedia work?"
我的第一个反应是“天啊，为什么现在世界上还有像维基这样基于百科全书工作的协会？”
My first reaction was something like "holy shit, why on earth would anything like a wiki based encyclopedia work?"
我的第一个反应是“天啊，为什么现在世界上还有像维基这样基于百科全书工作的协会？”
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