Pf : Probability that a piece of space junk will survive reentry.
Pf：指一块太空垃圾坠落到地球表面的概率。
This report mainly discussed design problems of reentry maneuvering trajectories.
本文主要讨论再入机动弹道的设计问题。
A new reentry guidance algorithm for RLV (reusable launching vehicle) is presented.
提出了一种针对可重复使用运载器的再入制导算法。
A method was proposed for the trajectory optimization of prompt reentry strike vehicle.
提出了有动力再入打击飞行器的航迹优化方法。
Always give this re-connection with your children and yourself first priority on reentry.
永远把和你的孩子，和你自己这样的交流当做回家后的第一要事。
Ectopic automaticity, triggered activity and reentry may be the mechanisms of the arrhythmia.
自律性异常、触发活动和折返形成是房速的主要发生机制。
Programming maneuvering flight guidance scheme about reentry vehicle is presented in this paper.
文提出一种关于再入飞行器程序机动飞行的制导方案。
It is studied the problem of tracking a ballistic object in reentry phase from radar observations.
研究了通过雷达观测跟踪重返大气层阶段的弹道目标问题。
But for larger areas of ischemia spiral wave formed a typical functional reentry around the obstacle.
但在大面积局部缺血时，螺旋波呈现典型的围绕障碍物旋转的功能性折返。
If things don't work out and you head back to the work force, your story is what will ensure your reentry.
如果所做的事情没能成功，你需要重新去找工作，你的经历也会确保你能重新找到工作。
The delegation met with corrections ministers, legal aid representatives, police, and reentry professionals.
代表团与团长，法律援助代表，警察以及再就业人员会面。
The following additional customs and reentry rules apply for United States citizens returning from the Caribbean.
下列额外的海关和折返规则适用于美果公民回果加勒比。
The designed maneuver reentry trajectory can meet the demands of attitude, heat flux and velocity for the warhead.
所设计的再入机动弹道能满足机动弹头对姿态、热流和速度的要求。
High temperature chemical non equilibrium phenomena have a great effect on the flow field around a reentry vehicle.
高温非平衡化学反应对高超声速再入飞行器绕流流场的气动热特性有较大影响。
In this paper, plasma wake flow of hypersonic reentry vehicle and radar scattering characteristics have been studied.
对再入飞行器等离子体尾迹及其雷达散射特性进行了分析、研究和大量的计算。
Therefore, the direct collocation method is a viable approach to the reentry vehicle trajectory optimization problem.
因此，直接配点法对于再入轨迹优化问题的求解是可行的。
A novel guidance law is devised for developing the guidance technology of optimal glide of a hypersonic reentry vehicle.
针对高超声速再入飞行器最远距离滑翔制导关键技术，设计了一种新型制导律。
Objective To investigate the effect of lorcainide on reentry related arrhythmias and its electrophysiological mechanisms.
目的探讨劳卡胺对折返激动有关心律失常的对抗作用及其机制。
On Feb. 1, 2003, the space shuttle Columbia broke apart on reentry into Earth's atmosphere, killing all seven crew members.
2003年2月1日，哥伦比亚号航天飞机在返回大气层时解体，7名宇航员全部罹难。
The heaters prevent the freezing of fuel lines that provide hydraulic power to steer the shuttle during ascent and reentry.
加热器可防止燃料的冻结，确保飞行器升空和返回的燃料供给。
Trajectory optimization is one of the key factors in scheme planning of the new type of hypersonic gliding reentry vehicles.
轨迹优化是新型高超声速滑翔式再入飞行器方案设计的关键技术之一。
Based on the inertial guidance instrument error model, the model of reentry point's parameters is established in this paper.
基于惯性制导工具误差模型，推导出存在工具误差时的再入点运动参数模型。
Proper combination of planning-tracking algorithm and FPA controller can bring great flexibility and adaptability to reentry guidance.
适当地结合规划-跟踪算法和航迹角控制器可给再入制导带来极大的灵活性和适应性。
Using numerical calculation, optimal roll program, the ratio of lift and drag, reentry Angle and reentry time of spacecraft are gotten.
通过数字计算，得到飞船的最优滚转程序、升阻比、再入角和再入终端时间。
Using numerical calculation, optimal roll program, the ratio of lift and drag, reentry Angle and reentry time of spacecraft are gotten.
通过数字计算，得到飞船的最优滚转程序、升阻比、再入角和再入终端时间。
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