Boeing Satellites Reach 2500 Years Of Accumulated On Orbit services.
波音公司宣布，该公司生产的260枚商用和民用卫星在轨累计服务时间已经达到了2500年。
Based on orbit dynamic theory, the close interception model was set up.
根据轨道动力学理论，建立了近距离空间拦截轨道的数学模型。
Since the geomagnetic field varies periodically on orbit, the dynamics of satellite is a linear periodic system.
由于地磁场的方向在轨道上周期变化，卫星的姿态动力学方程是一个线性周期系统。
Estimating the spacecraft's inertia parameters on orbit is good to control the spacecraft optimally and real-time.
在轨辨识出航天器的惯性参数，可以为更加优化、实时的控制航天器服务。
All commanding of the satellite was done by Northrop-Raytheon operations and support personnel, who will operate NPP on orbit.
卫星的所有命令由诺格公司和雷声公司的运行和支撑人员做出，他们将运行轨道上的NPP。
The formular for calculating satellite attitude motion and method for calculating satellite motion on orbit are discussed.
给出了计算卫星姿态运动和卫星轨道运动的计算公式；
When flying on orbit, with the change of environment and time, the response capability of a space camera must be attenuated.
空间相机在轨运行之后，由于环境的变化和时间的推移，空间相机的响应性能必然会发生衰减。
On the other hand, when the remote sensor runs on orbit, its performance will gradually degenerate and MTF will gradually descend too.
另一方面，随着卫星遥感器在轨运行时间的增长，其性能会逐渐退化，MTF也会逐渐下降。
Assuming the systems keep operating, like I've said, we can command the vehicle from the ground and operate it fine, and remain on orbit indefinitely.
假定系统继续运行，我和所说的那样，我们可以很好地从地面指挥和操作飞船，使它无限期地留在轨道上。
Dynamic environment in launching and thermal environment on orbit affect dimension stability of space optical remote sensor, thus declining its imaging quality.
发射过程中的力学环境和在轨运行时的热环境，影响航天光学遥感器的尺寸稳定性，进而影响成像质量。
In automatic mechanism selection system based on orbit, orbit characteristics and dimension parameters of key orbit segments are momentous for selecting mechanisms.
基于轨迹的机构自动化选型系统中，轨迹特征及关键轨迹段尺寸参数是选择机构的重要依据。
When the satellite works on orbit or is testing on ground, the relative changing laws of simulated telemetry values are consistent with the same cloud picture imaging standards.
对于相同的云图成像基准，地面测试与卫星在轨运行时，与模拟遥测值的对应变化关系是一致的。
Including the superfluid helium, the providing of liquid helium to the plant in the space on orbit, cryogenic wind tunnels techniques, the preparation and application of slush hydrogen etc.
论述超流氦冷却技术及空间飞行中的液氦再供给等在轨机载验证、低温风洞技术、氢浆的制备和应用前景等。
According to operation data of the satellite on orbit, some operation results and the specification conformity are presented. Furthermore, the control system scheme is demonstrated on orbit.
根据卫星在轨运行数据，给出了卫星在轨运行的部分曲线和姿态控制、轨道控制的指标实现情况，对姿态控制分系统方案进行了在轨验证。
Networks of satellites already on orbit or soon to be launched are beginning to provide detailed observations of the workings of the atmosphere, ocean, and continental crust over the entire planet.
由已经进入轨道或是即将发射的卫星所形成的网络已开始提供有关整个地球的气、海洋和陆壳运动情况的详细观测资料。
What we need is a really tall tower here on the ground right at the equator and a satellite in geostationary orbit.
我们需要的是一个在赤道处地面上的非常高的塔，以及沿地球静止轨道绕地运转的卫星。
With nine engines on the first stage, Falcon 9 can reach orbit even if one or more fails.
猎鹰9号的第一级有9个引擎，即使一个或多个引擎故障，它仍然可以到达预定轨道。
Once you are in this geostationary orbit right over the tower, just lower your carbon nanotube cable down from the satellite, tether it to the tower here on Earth.
一旦你来到这个塔旁的地球静止轨道，只需把碳纳米管电缆从卫星上放低然后将其系在位于地球的塔端。
The government is more focused on preventing new debris from forming than taking the trash out of orbit.
政府更关注的是防止新的碎片形成，而不是把垃圾带离轨道。
Earth's orbit around the sun and tilt on its axis combine to carry us in this hemisphere further away from receiving the sun's rays most directly.
随着地球围绕太阳的轨道和轴的倾斜将我们带到这个半球，我们更远离直接接收太阳光线的地方。
A lot of people think of earth's orbit around the sun as being perfectly circular, as smooth and as regular as, say, the way that hands move on a well-made watch, but it just doesn't work that way.
很多人认为地球绕太阳的轨道是完美的圆形，就像手在一块制作精良的手表上移动那样平滑、有规则，但事实并非如此。
The mirrors could orbit—thousands of miles high—at the same speed as the earth turns on its axis.
这些镜子可以在几千英里的高空以地球绕地轴旋转的速度运行。
The affection on the enthalpies of formation aroused by factors, such as size factor, electronegativity, the energy of orbit of selectron etc, is also discussed.
还讨论了尺寸因子，电负性，选择子的轨道能量等因素对形成焓的影响。
So, the planet moves on its orbit.
行星在它轨道上运动。
The propulsion subsystem is essential for maneuvering the MUOS satellite during transfer orbit to its final location as well as conducting on-orbit repositioning maneuvers throughout its mission life.
在把MUOS卫星变轨到最终位置以及执行任务寿命期内的在轨机动性重新配置上，该推进系统是很关键的。
The Air Force insisted the mission was a "technology demonstration" and noted that it had applications for determining satellite malfunctions and performing on-orbit servicing.
美国空军将此次任务定位为“技术验证”并认为尤确认卫星故障、提供轨道服务的作用。
This dual payload approach is fully compatible with deployed UHF terminals that will transition to MUOS technology as existing UFO satellites reach the end of their on-orbit life.
这种双有效载荷方式将完全兼容于已部署的UHF终端，将在现有U FO卫星运行寿命终止后转移MUOS技术。
The first MUOS satellite along with the associated ground system are scheduled for on-orbit hand-over to the Navy in 2010.
首颗MUOS卫星及其相关的地面系统的在轨移交时间是2010年。
The first MUOS satellite along with the associated ground system are scheduled for on-orbit hand-over to the Navy in 2010.
首颗MUOS卫星及其相关的地面系统的在轨移交时间是2010年。
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