滑翔飞行

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。

Represents hang gliding, paragliding and powered paragliding in South Africa. Provides a flying site guide and insurance cover for visiting pilots, and can put them in contact with local pilots and flying schools.

在南非演示悬挂式滑翔，翼伞和动力翼伞飞行活动，向飞行中的驾驶员提供飞行地点安全指导，并与地方驾驶员和航空飞行学校保持联系。

Primary among them are the arboreal hypothesis (eg, Feduccia 1996), with the ancestors of Archaeopteryx living in trees (or at least climbing into trees on a regular basis) and initially gliding before developing flapping flight, and the cursorial hypothesis (eg, Burgers and Chiappe 1999), with these ancestors using long, powerful legs to run fast with their arms outstretched and, eventually, developing sufficient lift to take flight.

小学它们之间是树栖假说（例如，费多契亚1996年），与祖先的始祖鸟生活在树上（或至少攀爬到树木的定期）和最初的滑翔之前，发展中国家扑飞行，以及cursorial假说（例如，汉堡和chiappe 1999年），与这些祖先的长期使用，强大的腿跑得快，与他们的武器 outstretched ，并最终发展有足够的电梯采取飞行。

POWERED HANG GLIDER : A hang glider fitted with means of propulsion capable of launching it and sustaining flight.

动力滑翔翼：一种配备推进手段得以发射和维持飞行的滑翔翼。

Their number follows ,such as partridges,have a like power of strong propulsion,but sooner tire.you may pick them up in utter exhaustion,if wind over the sea drive them to a long distance.the swallows share the virtues of both schools,it tires not ,nore does it boast of its power.it belong to the air.travelling it may be six thousand miles to and from the northern nesting home.

如果海风驱使它们飞行很长距离，你可以捡到一些因筋疲力尽而摔下来的鹧鸪。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。

Like the flying squirrels of America and Eurasia, the more distantly related flying scaly-tailed squirrels of Africa, and the marsupial gliders of Australia and New Guinea, colugos have a single large flap of skin, the patagium, which works a bit like a controlled parachute.

与美洲和欧亚大陆的飞行松鼠，以及与之关系更远的非洲飞行鳞尾狐猴、澳大利亚和新几内亚的有袋滑翔动物一样，猫猴有一个大大的、单独的皮肤翅膀——翼膜，翼膜的作用有点像可控制的降落伞。

There are many variations on the theme of animal flight - parachuting, gliding, and powered flight.

还有很多变化，关于这一主题的动物飞行-跳伞，滑翔，动力飞行。

Based in Warren, Ohio, the Cleveland Soaring Society provides flying facilities for its members on a nonprofit basis and encourages their training by providing ground school and flight instruction in sailplanes and gliders.

设在俄亥俄州的克利夫兰滑翔社团，在非盈利基础之上为其成员提供飞行设施，地面学校支持和飞行指导，以及滑翔机训练。

A separate ranking is produced for each of the flying disciplines of hang gliding and paragliding.

滑翔翼和飞行伞的个别飞行领域，产生各自的排名。

They should have extensive experience of international hang gliding, paragliding or other FAI competitions and at least one steward should have experience of paragliding accuracy.

他们应该有广泛的国际滑翔翼、飞行伞或其他 FAI 比赛经验，且至少应该有一个筹办人有飞行伞运动准确性之经验。

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。