Over time, the buildup of these particles provides enough thrust for a small spacecraft to travel in space.
在不久的将来，这些原子的建设将提供足够的推动力让小航空器在太空航行。
The labor was obviously hard on him. He was an old man, and each time he thrust his spade into the ground to turn the earth, he heaved heavily.
这是一位老人，农活显然是艰苦的，他每锄地一次，都要沉重地再次举起铁锹。
It is in this manner that the thrust-time curve was produced.
正是在这种方式的主旨-时间曲线制作。
At last, changeful curves of thrust misalignment followed pressure and time are obtained.
首次得到喷管侧向推力随压强和时间变化的曲线。
The severe influence of the rocket engine property, especially its total thrust impulse and work time on the rocket flight performance has aroused great attention among technological workers.
发动机工作性能对火箭飞行性能的严重影响已引起众多研究人员的重视，尤其是火箭发动机推力总冲及其工作时间等重要参数。
Simulations show that using the improved explicit guidance, the working time of the engine is increased while the direction of the thrust near shutoff keeps stable.
仿真表明，采用改进的显式制导，发动机工作时间有所增加，但邻近关机时推力方向平稳。
Simulation results show that when the launcher speed is given, a certain increase of thrust will shorten separation time, reduce interaction of load and launcher, and hence improve separation safety.
仿真结果表明，当运载体速度一定时，在一定程度上增大推冲力，可缩短分离时间，减轻载荷与运载体之间相互作用的影响，可提高分离安全性。
The thrust of the practices also changed over time to become more ritualized.
在还随时间变化的做法，重点更加仪式。
It is in the first time in domestic RBCC researches that the RBCC configuration with relatively higher thrust augmentation in ejecting mode is obtained.
在国内RBCC研究中首次从理论上获得了具有较高推力增强的RBCC引射模态方案，对开展RBCC引射模态研究有重要意义。
Finally, it's your senior year of college, enjoy it, have some fun, take some time to really enjoy college before you're thrust into the real world.
这是你在大学的最后一年，要抓紧时间在独自面对现实世界之前好好享受大学时光。
A kind of vertical test fixture for firing test of high thrust and short time motor with fore nozzles was designed. Its dynamic characteristics are analyzed and satisfactory results are obtained.
设计了一种适用于前置多喷管大推力短时间特种发动机点火试验的立式试车架，设计中对其动态特性进行了分析，获得了满意结果。
The results show that the method is effective in improving dynamic characteristic of thrust measurement system. At the same time, the method can be used in other dynamic measurement systems.
仿真结果表明，此方法在改善推力测量系统动态性能方面是行之有效的，可将其进一步推广到其它动态测量系统。
The six degrees of freedom dynamic equation of a kind of mass-controlled and thrust vectoring-controlled saucer-like air vehicles without tailes, wings and rudders was derived for the first time.
首次推导了基于质量控制和推力矢量控制的一类无尾无舵翼碟形飞行器的空间六自由度运动动力学方程。
Each time the swimmer's feet leave and enter the water, air comes along, increasing drag and reducing thrust.
无论什么时候，只要游泳者的脚从水面之上打入水中，空气就会随着脚进入水中，这些空气泡会产生阻力，而且还会减少推动力。
The thrust of the practices also changed over time to become more ritualized .
在还随时间变化的做法，重点更加仪式。
The alternate roller bearing in FAG bearing, can bear at the same time come from each direction loading like axial, thrust or momentum loading.
FAG轴承中的交叉滚子轴承，能同时承受来自各方向荷重（如轴向、推力或动量荷重等）。
Bearing a single row thrust ball bearings to the heart, which has at the same time to bear a greater bearing axial load and radial load capacity.
轴承采用了单列向心推力球轴承，这种轴承具有同时承受较大的轴向荷载和径向荷载的能力。
Compared to single piston cylinder, it features fast action and flexibility, specially used when large thrust force or tensile force is required within short time.
介绍了双活塞液压缸的研制及应用，与单活塞液压缸相比，它具有动作快速、灵活等优点，特别适合在需要快速提供强大推力或拉力的场合。
At last, momentum wheel unloading and long-term momentum management are accomplished under the control of thrust after getting yaw Angle estimator and computer simulation is achieved at the same time.
最后阐述了在得到偏航角的估计值后，运用喷气控制来进行动量轮卸载和长期角动量管理，并进行了计算机仿真。
For high in situ stress occurred in Ertan dam area, combined action of initial in situ stress field, time and space effect during excavation and external loads arch thrust etc.
笔者针对二滩电站坝区存在的高地应力现象，从初始地应力场的建立、施工开挖的时空效应，直到与拱推力等外荷载共同作用下对坝基岩体稳定的影响全过程进行了分析和计算。
The problem of optimal bounded thrust time fixed rendezvous of two spacecraft is investigated in this paper.
研究了在常推力作用下，两个空间飞行器的固定时间最省燃料交会问题。
Compared with traditional design optimization method, MDO method can gain the optimum design for flight vehicle as well as the optimum thrust-time curves of booster.
与传统设计优化方法相比，MDO方法一次设计优化就可得到满足飞行器总体设计指标的最优设计，得到内外弹道相匹配的助推器最优推力-时间曲线。
The time came for the old man to get off. Impulsively he thrust the flowers into the girl's lap.
到了老人快要下车时，他忽然将冲动的将自己手中的鲜花推向少女的怀中。
Then the paper applies EA and SPEA to an orbital transformation problem. - time-energy optimization o The paper also solve low thrust control problem of relative motion using fuzzy logic.
然后分别用一般的进化算法和改进的SPEA方法解决轨道转移的时间-能量优化问题，对于相对运动方程有限推力控制问题，本文用模糊控制的方法加以解决。
Electrodynamic tethers with low thrust-to-weight ratios can only perform orbital transfers over a large number of revolutions, which poses a real challenge to short time scale optimal control methods.
电动力绳系卫星的推力幅值较小且方向固定，完成轨道机动任务的周期长，其最优控制问题的求解比较困难。
The stability enhancement effect of cutting off and regulating vane at the same time is not as good as the preceding one, but with lesser thrust drop and better realizability.
而采用切油加导叶调节的手段尽管扩稳效果不如前者明显，但其推力损失较小且系统易于实现。
The stability enhancement effect of cutting off and regulating vane at the same time is not as good as the preceding one, but with lesser thrust drop and better realizability.
而采用切油加导叶调节的手段尽管扩稳效果不如前者明显，但其推力损失较小且系统易于实现。
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