在飞行中

First, right coordinate system is chosen to analyse force and torque in the bomb flying course , particle ballistics model of vertical attack face is built ,after that, ballistics plan composed of four phases ,namely slide 、transition、dive and attacking angle backing to zero , is designed which can achieve demands for both cannon-shot and precision.

首先选取合适的坐标系分析了制导炸弹在飞行过程中所受的力和力矩，建立了纵向攻击面的质点弹道模型。在此基础上，按既要满足一定射程又要满足一定精度的技战术要求设计、优化出包含滑翔、过渡、俯冲和攻角回零四段的方案弹道。

This allows problems to be identified on the ground that otherwise could pose a danger to crew mid-flight.

这使得潜在的问题可以在地面阶段进行识别，否则会在飞行过程中危及船员安全。

It tires not, nor does it boast of its power; but belongs to the air, travelling it may be six thousand miles to and from its northern nesting home, feeding its flown young as it flies, and slipping through a mediam that seems to help its passage even when the wind is reverse.

燕子充分兼有这两类鸟的长处，它既不疲劳，也不炫耀自己的飞翔力；在空中十分自如，可以飞行6，000英里，可以飞往北方做窝的老家，再从老家飞回；一边飞一边喂养会飞的雏燕，甚至在顶风时也能在气流中滑翔，似乎气流在帮它前进。

The swallow shares the virtues of both schools in highest measure. It tires not, nor does it boast of its power; but belongs to the air, travelling it may be six thousand miles to and from its northern nesting home, feeding its flown young as it flies, and slipping through a medium that seems to help its passage even when the wind is adverse.

燕子充分兼有这两类鸟的长处，它既不疲劳，也不炫耀自己的飞翔力；在空中十分自如，可以飞行6，000英里，可以飞往北方做窝的老家，再从老家飞回；一边飞一边喂养会飞的雏燕，甚至在顶风时也能在气流中滑翔，似乎气流在帮它前进。

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。

Huanjiang pterosaur fossils from that we can understand that Huanjiang pterosaur wing is an original hand-long class, the wings expand to more than two meters long, can fly by gliding in the air, but also on the ground running, swimming in the lake.

由环江翼龙化石我们可以了解到，环江翼龙属原始的翼手龙类，翅膀展开来有两米多长，能借助滑翔在空中飞行，也能在地上行走，在湖泊中游泳。

During the 1991 Gulf War, 80% of the Tomahawk cruise missiles launched by the U.S. forces hit their targets within 3 meters of the aim point after a 1,600km journey.

在1991年海湾战争时，美军发射的"战斧"巡航导弹中的80%在飞行1，600公里之后，在3米误差内击中了它们的目标。

"We feel this really was a tremendous success for the project," added David Bushman, project manager for beamed power at Dryden."We are always trying to develop new technologies that will enable new capabilities in flight, and we think this is a step in the right direction."

&我们真的感到它是一个巨大的成功&David Bushman补充道&我们总是在寻求能在飞行动力中在原有的技术基础上获得突破，看来这一点我们是走对了。&

This sets the stage for a unique Player vs Player experience within the Abyss, where free flight will be vital, and where stategic battles will be fought over massive fortresses.

自由的飞行这在深渊将会是重要的，而且国战的地方将会在巨大的城堡之上打仗， PvP 不是所有的 Aion 玩家能在深渊中里面相对玩家经验为一个独特阶段的玩家而设定。

The computer simulation of ceramic thermal barrier coating on turbine engine blades during loading process has been conducted.

本文通过在计算机中建立航空发动机叶片的工作环境，进而模拟在飞行状态下叶片表面涂敷的陶瓷热障涂层的受力行为，获得了陶瓷涂层在热气动载荷作用下应力场分布，并得出应力场分布与涂层结构和叶片几何形状及与承受的载荷之间的关系，提出了进一步提高陶瓷热障涂层的使用寿命的途径。

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。