该文讨论了使用中轨共地面轨迹星座建立区域覆盖卫星通信系统的优化设计方法。
An optimization design method for implementing regional coverage satellite system with common-track constellation is proposed.
拦截器在飞行过程中轨控推力以持续定常方式或小脉冲方式施加在垂直视线的方向，目标具有一定的机动能力。
The interceptor had sustain constant thrust or impulsive thrust perpendicular to the line-of-sight during the flight, and the target was maneuverable.
在轨x - 37空天飞机将为我们提供更多的试验机会，让我们在任务中获取最大价值。
Keeping the X-37 in orbit will provide us with additional experimentation opportunities and allow us to extract the maximum value out of the mission.
各种风景中充满了线形的元素——小路，火车轨，栅栏，山脊线，树枝等。
Landscapes are full of linear elements— roadways, train tracks, fencerows, ridgelines, tree branches.
根据报告，DNA里“烙上”风险嗜好的志愿者中，有50%的人过去背叛过伴侣，而未携带该冒险基因变异体的人只有22%曾经出过轨。
Half of those with a love of risk imprinted in their DNA reported committing infidelity in the past, compared with 22 percent of those without the variant.
9月22日由欧南方天文台智利点发布的极端长曝光的“日轨图”中太阳横穿天空约180次。
The sun crosses the sky roughly 180 times in an extremely long-exposure "solargraph" released by the Chile-based European Southern Observatory (ESO) on September 22.
目前为止，Cuadrilla公司只完成两个探井，第三个探井即将完工，但是在该公司的“宏大”设想中，他们将在未来的16年里，在轨地区钻出800个探井。
Cuadrilla has so far only drilled two exploration Wells, with a third soon to be completed, but in its "high-end" scenario it envisages drilling 800 Wells in the area over 16 years.
无线资源管理是低轨卫星通信系统中的一个重要的研究方面。
An important aspect of LEO satellite communication system is to manage the radio resources.
创建表面使用扫描第2轨与相切选项。为了实现切线选项，您将必须建设中的表面部分。
Create the surface using sweep 2 rails with the tangency option on. To achieve tangent option you will have to build the surface in parts.
维修过程中，要注意不要随便改变原来共轨管上的进、出油口位置以及与喷油泵出油口之间的连接关系。
During maintenance, it is not permitted to change the original position between the inlet and outlet on the common rail pipe and connection from pipe and pump at random.
CDMA作为一种抗噪声强、带宽分配灵活，保密性强的传输接入方式被广泛的应用于民用、军用低轨卫星通信系统中。
CDMA technology is widely used in LEO satellites communication because of many merits offered by CDMA system such as suppression of ingress noise, flexibility of bandwidth assignment and the security.
行驶了半个小时，平坦的一望无际的戈壁消失了，取而代之的，是距离车轨百米之遥的连绵山丘，一应都是暗淡的土黄色，生命，似乎在这无尽的土黄色中绝迹了。
Half an hour later, the planar endless Gobi disappears, replacing it is the continuous massif all in the yellow color of ocher — Life seems dying out in this limitless yellow.
最后，提出了高校内部会计控制应用中的轨制局限，如高校内部会计控制对管理人员滥用职权、蓄意营私舞弊或内部不相容职务的人员串通作弊等。
Finally, the essay presents the system limitation in the application of internal accounting control like abuse of power by the supervisors, deliberate corruption, collusive cheating and so on.
为了使航天测控中星箭分离后得到的数据能够在定轨时获得应用，提出了一种修正方法。
To use the data after separation of satellite and rocket in the process of calculating orbit, a correction method is proposed.
因此，研究高轨环境下微弱导航信号的捕获是极其重要的，它是解决高轨卫星星载GPS应用中的一个关键技术。
So it is important to study the acquisition of weak navigational signal in geostationary orbit environments, and it is a key technique to the application of GPS onboard GEO.
视觉伺服可以应用于机器人初始定位自动导引、自动避障、轨线跟踪和运动目标跟踪等控制系统中。
Visual servo system can be used in the control systems of robot original orientation guiding, obstacle avoiding, trajectory tracking and moving object tracking, etc.
介绍了一种新型的底卸式箕斗卸载曲轨，并总结了固定卸载曲轨设计中需注意的几个问题。
The paper introduced a new type of dump track for bottom dumping skip, and some issues need to be noticed in design are summarized.
同时以hitsat小卫星的电源分系统的故障诊断为例，证明该模型在小卫星在轨故障诊断系统中的有效性和可用性。
Furthermore, taking the power subsystem's fault diagnoses of HITSAT small satellite as an example, we have proved the validity and usability of this model in the paper.
根据研制的中压共轨电控可变气门系统机构的工作机理，建立了中压共轨电控可变气门系统的仿真模型，试验证明其精度达到了93 % 。
On the basis of the principle of a middle pressure common rail electronically controlled variable valve system, a model has been built for modeling the system and its accuracy achieves 93%.
介绍钢铝复合导电轨在三轨系统中的作用、工作原理、结构和常用材料。
The role, working principle, structure and commonly used material of steel aluminum composite conductor rail in the three-rail system are introduced.
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。
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.
以某极轨对地观测卫星为背景，分析了姿态控制系统中单机部件出现故障时，系统将会出现的状态变化情况，找出故障部件的判定方法；
This article analyzes the status change in the attitude control system when faults appear based on one polar orbit satellite, and provides a method to decide faulty component.
在用气轨测重力加速度的实验中，给出了水平调节的简单方法。
Based on plenty of experiments a simple method of adjusting the air track horizontally is given.
杂谈托链轮、支重轮、驱动轮及轨链节等，在长时间的运转过程中，会出现一定程度的磨损。
Entrusted sprocket, supporting wheels, wheel and rail links and so on, in the long running process, there will be a certain degree of wear and tear.
针对卫星精密定轨过程中观测资料存在粗差以及观测资料的合理定权问题，将抗差方差分量估计引入到卫星精密定轨中。
In this paper, the robust variance component estimation is introduced into the satellite orbit determination to resist the effects of outlying observations and to determine the weights.
电离层掩星观测中，当低轨卫星(LEO)轨道高度较低时，轨道以上的电离层电子总含量(TEC)对掩星反演的影响不能忽略。
When the low-Earth orbit (LEO) satellite is low, the contribution of the Total Electron Contents (TEC) above the satellite is not neglectable for inversion of GPS-LEO ionospheric occultation.
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。
Dynamic environment in launching and thermal environment on orbit affect dimension stability of space optical remote sensor, thus declining its imaging quality.
它通过设置在带材轧机上的无驱动式杯形磨辊装置，对轧制中工作辊表面进行在线磨别，以保证轧辊保持良好的轨型。
The work roll surface can be ground on-line by a non-driven cup type of on-line Roll Grinder(ORG) installed in a strip mill to maintain the appropriate roll shape.
它通过设置在带材轧机上的无驱动式杯形磨辊装置，对轧制中工作辊表面进行在线磨别，以保证轧辊保持良好的轨型。
The work roll surface can be ground on-line by a non-driven cup type of on-line Roll Grinder(ORG) installed in a strip mill to maintain the appropriate roll shape.
应用推荐