在飞行中的

Research on the diversity of shape and structure of avian tarsometatarsus,not only did it present evidences to realize the ecological habit of birds of different species,but made the knowledge of functional behavior of avian hindlimbs perfect progressively also.

不同类型鸟类跗跖骨的形态多样性分异反映了鸟类对外界环境的选择性适应。1鸟类跗跖骨的特征1·1鸟类跗跖骨的组构在鸟类后肢骨骼系统中，其下端的跗跖骨为一块愈合完整的骨骼，这亦成为鸟类特有的骨骼结构，与其他四足动物(跗骨、跖骨由多块分离的骨骼组成)明显不同，鸟类由于飞行使得

Transient responses of the tiltrotor during the transition flight are calculated aiming at semispan soft-in-plane tiltrotor models with the elastic wing.

相比常规直升机的旋翼机体耦合或飞机的螺旋桨机翼间的耦合，倾转旋翼机的各种耦合关系更复杂，特别是倾转旋翼机在两种飞行状态间的过渡过程中，系统的惯量及耦合特性相应变化，气弹耦合动力学问题尤为复杂，具有很强的非线性与非定常特性。

Its stealth and supersonic speed allow the Lightning II to fight in high-threat environments that the slower, unstealthy A-10s cannot survive. The F-35 also will be dispatched to low- and medium-threat theaters.

它的隐身及超音速飞行能力使得闪电II可以在低速、无隐身能力的A-10战机所不能生存的高威胁环境下作战。F-35同样可以用于应对中、低威胁程度的战场环境。

Tests with artificial stars have Proved that certain night-flying birds are able to follow the stars in their long-distance flights .

用人造卫星作的测试证明，某些夜间行进的鸟在长途飞行的过程中能够追寻星星的方向。

The new Japanese first lady has made headlines in the past for tales of her alien encounters: in a book published last year, she wrote about an extraterrestrial experience some 20 years ago when she said her soul rode on a triangular-shaped UFO and went to Venus while her body was asleep.

这位新一任的日本第一夫人曾因其去年出版的一本书中提到的遇到外星人的经历，而登上过头条新闻。她这样描述自己二十年前的外太空经历，当她的身体在睡觉时，她的灵魂骑着一个三角形的不明飞行物去了火星。

I arrived in Taipei mid August 2002, jetlagged from a 16-hour flight and armed only with a bunch of new CDs from Austria, an interest in international collaboration and a relatively open mind.

2002年8月，我在16小时飞行所造成的严重时差中抵达台北，身边只带著奥地利新买的一些CD，还有对於跨国合作的好奇心，以及开放的态度。

Everyone from Formula One drivers experiencing drag, through to aeroplane passengers suffering a bumpy flight, will have experienced clear-air turbulence, the mixing of high- and low-speed air in the atmosphere.

从每一名经历过阻力的F1赛车手，到正遭遇颠簸飞行的乘客，可能都会经历净空的湍流，在这样的氛围中，它汇聚了低速和高速的两种气流。

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。