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According to the demand of flight control system, a nonlinear dynamics model with considerable aerodynamic forces and moments for a large maneuver re entry missile head is built. 根据飞行控制要求,考虑了影响较大的气动力和气动力矩因素,建立了一个完全表征大机动情况下弹头运动的非线性动力学模型。
Sources said a hit-to-destroy ballistic missile could knock out any satellites at that low orbit. 消息人士说,肇事转可以击倒任何弹道导弹摧毁在低轨道卫星。
The Skulls were very low on fuel by the time they finished the low orbit, and Farrago moved in to retrieve them. 骷髅中队完成低空轨道飞越之后，燃料已经快要耗尽，法拉戈号上前将他们接回。
For satellites in low orbit, this generally means that the observer's latitude must be within the range of latitudes over which the satellite passes. 对于低轨运行的卫星，这通常意味着如果要观察到它，观测者的纬度必须要高于卫星轨道的纬度才可以。
All spacecraft in low orbit are subjected to hypervelocity impacts by meteoroids and space debris,which can lead to significant damage and catastrophic failure. 低地球轨道上的航天器易受到微流星体及空间碎片的超高速撞击,导致其严重的损伤甚至灾难性的失效。
All spacecrafts in low orbit are subject to hypervelocity impacts of meteoroids and space debris,which can in turn lead to its significant damage and catastrophic failure. 低地球轨道上的航天器易受到微流星体及空间碎片的超高速撞击,导致其严重的损伤甚至灾难性的失效。
According to measuring data of three axis magnetometer in the body frame, the attitude of the satellite in low orbit can be determined through Kalman Filter. 利用三轴磁强计量测的地磁场矢量在仪表坐标系中的分量,通过卡尔曼滤波器可以确定低轨道卫星的姿态。
In atoms, the excited electron returns to a lower orbital, emitting a photon. 在原子，被激发的电子释放出一个光子，回到能量较低的轨道；
In the lower orbit, scientists will be able to distinguish surface objects as small as 3 feet (1 meter) wide, McEwen said. 麦克尤恩说，在这个较低的轨道上，科学家们甚至能够看清火星表面上3英尺(1米)宽的物体。
As LRO gradually descends to a lower orbit, the images will improve and provide closer looks at the lunar landing sites. 说：随着这个探测器轨道继续降低，图像将会进一步改善，而且会提供对月球登陆点的距离更近的照片！
low orbit satellite communication networ 低轨道卫星通信网
The ball was too low to hit an overhead re turn. 那个球实在太低无法高举回击。
The government is trying to keep a low profile on this issue. 政府力图在这个问题上保持低姿态。
The singer forced his low notes. 那位歌手勉强唱出低音。
We' re ( running ) low on petrol. 我们的汽油不多了.
He because of bashful but low head. 他因羞愧而低下了头。
The ship lay keeled over at low tide. 那艘船因退潮而倾覆。
My home town lies low in a hidden valley. 我的家乡位于一个隐蔽的山谷里。
Low grades are getting Hellen down. 低分数使海伦闷闷不乐。