在飞行中的

The trajectory theory model of air target was made up according to its basic rule of flight control. A stochastic difference equation to model the air target movement in inertial frame coordinates was introduced.

根据空中目标飞行控制的基本规律，首先建立了空中目标航迹分布的理论模型，并在惯性坐标系中建立了基于随机微分方程的目标运动模型。

In this paper the pulse measurement used to measure the pulse ionization electron current for electron impact ion source of time of flight mass spectrometer was discussed, the shortcoming of average current measurement was analyzed, and the practical measuring circuit of the pulse was given.

本文讨论了脉冲测量技术在飞行时间质谱计电子轰击离子源中测量脉冲离化电子流的应用，分析了平均电流测量方法测量脉冲离化电子流的局限性，给出了实际的脉冲测量电

Then, in the selection of nearly landing stage in weight landing events as the research object, based on the aerodynamic characteristics, from the initial approach to finally landed on heavy multiple grounding landed on a detailed analysis of causes, and put forward corresponding solutions of manipulation and Suggestions.

然后，在选取进近着陆阶段中的重着陆事件为研究对象，基于飞机飞行的空气动力特性，从初始进近到最后接地着陆多个角度对重着陆成因进行详细分析描述，以及提出各种相应的解决方案和操纵建议。

The errors and area limits caused by the lunar curvature were avoided in this model established under the Selenocentric Orthogonal Coordinate System, the accidental errors of exterior line elements were reduced by orbit fitting and interpolation, the polynomial orders of systematic errors in satellite orbits were decreased with their expression in the flying coordinate system moving and rotating with satellites, and the reliability of exterior orientation solution was enhanced under the condition of sparse and low accuracy control points by appending constraint of orbit and attitude parameters.

该模型通过在月心直角坐标系进行影像空中三角测量来消除月球曲率引起的误差和测图范围限制，通过轨道形状的拟合与插值来减小摄影时刻轨道位置的偶然误差，在飞行坐标系中建立轨道修正模型来减少定向参数的数目，对轨道和姿态增加约束条件来提高月面控制点数目稀少及精度低条件下外方位解算的精度与可靠性。

The US $ 700 million mission uses four perfect spheres inside the world's largest vacuum flask to detect minute distortions in the fabric of the universe.

花费7亿美元的太空飞行任务是用安装在世界上最大保温瓶内的4个完美球体去探测宇宙构造中的细微畸变。

Flight behavior of the oriental armyworm Mythimna separata moth in airflow was studied systematically using wind tunnel and scanning entomological radar.

通过改进悬吊测飞技术、室内风洞和野外雷达相结合的观测方法，研究了粘虫在气流场中的飞行行为特征及其与气流的关系。

But in the end, she finally began to receive training in the royal route, and met the legendary flight instructor Master John Hui John Turney, the unexpected is that, when there were many twists and turns, she becomes turbulent life together.

但最后，她终于开始在皇室航线接受训练了，且遇到了传说中的飞行讲师约翰师约翰。彗特尼，意想不到的是，这时出现了许多波折，她的生活也变得动荡起来。

000 Tons travelling at 650 miles/second creates enormous air resistance. This will heat up the reindeer up in the same fashion as a spacecraft reentering the earth's atmosphere.

5.353，430吨重的物体以每秒650哩的速度在大气中飞行会遇到强大的空气阻力，就象宇宙飞船由轨道回航一样地把那些驯鹿加热。

000 Tons travelling at 650 miles/second creates enormous air resistance. This will heat up the reindeer up in the same fashion as a spacecraft reentering the earths atmosphere.

5.353，430吨重的物体以每秒650哩的速度在大气中飞行会遇到强大的空气阻力，就象宇宙飞船由轨道回航一样地把那些驯鹿加热。

For example,the spiral arrangement of scale－bract complexes on ovule－bearing pine cones,where the female reproductive organs of conifers are located,is important to the production of airflow patterns that spiral over the cone's su***ces,thereby passing airborne pollen from one scale to the next.

例如，带有胚珠的松球的鳞苞综合体的螺旋状安排，亦即松柏目植物雌性殖器官的所在位置，对于气流模式的形成与产生殊为重要，而这些气流模式在松球的表现盘旋上升，从而把在空气中飞行的花粉从一个鳞苞传播至下一个鳞苞。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。