In the course of evolution, some birds have lose the power of flight.
在演化过程中一些鸟失去了飞行的能力。
In the course of evolution, some birds have lost the power of flight.
在进化的过程中，一些鸟丧失了飞行能力。
It is usually felt that the power of flight would liberate one from the earth, but freedom is accompanied by anxiety and loneliness.
通常人们认为飞行的力量就在于让人摆脱地球的束缚，但是自由却伴随着焦虑和孤独。
The two insects have complex flight mechanisms with major muscles in the thorax, the chest region, which power the flapping of wings.
这两种昆虫的飞行机理比较复杂，胸部长有较多肌肉，这样它们才能有力量振动翅膀。
It is the first flight recorder to have a recorder-independent power supply which allows operation in the event of a power failure.
它是拥有一个记录器独立电源供应的第一个飞行记录器，在动力供应失败的情况下也可操作。
Solar Impulse, a prototype of an airplane designed to fly around the world using only solar power, made its first real flight today.
一架仅依赖太阳能提供动力，用于环球旅行的太阳能飞机今天圆满完成首次试飞航程。
This is a major step toward completing the second of the program’s two Low Power System Integration-Active Flight Test knowledge points, the first of which was accomplished earlier this month.
这向着项目第二个“低能量系统主动集成飞行测试知识点”迈出了重要一步，首个知识点已经于本月早些时候完成。
The PW1524G will power the first of two Bombardier CSeries aircraft, the 110 to 125-seat CS100, which is due for first flight in 2012 followed by entry into service in 2013.
PW1524将为庞巴迪两种C系列中的一种即110到125座CS100型客机提供动力。 该机将在2012年首飞2013年投入运营。
One of its more glamorous uses as an embedded operating system is to power the in-flight entertainment systems on some Virgin and Qantas long-haul jets.
更妙的是，它还被用于维京航空和澳洲航空长途航班的空中娱乐系统。
Monitoring and redundancy within the flight control system, aircraft sensors, power and hydraulic generation ensure a high degree of availability of the electrical control.
飞行操纵系统的监控和冗余、飞机传感器、动力和液压的产生，这些构成了高度有效性的电传操纵。
Having initially connected the ornithopter using a DC power source, they realized that the device could lift 1.5 grams of payload, which was roughly the mass of the batteries required for flight.
起初给扑翼机接上一个直流电源之后，他们发现这个装置的有效载荷为1.5g，这大概可以勉强提起飞行所需的电池。
Aviation mechanics who specialize in the power plant of an aircraft know how to dismantle, inspect, clean, overhaul, and rebuild various types of flight engines.
专攻于飞机动力装置的航空技师懂的如何拆卸，检查，清洁和重新组装各类飞机引擎。
In this paper, the rotor power transfer coefficient is determined from the point of helicopter flight dynamics.
文章详细地介绍了从飞行力学的角度来确定直升机平直飞行时的旋翼功率传递系数。
The paper presents a design approach based on extremum seeking for minimum power demand of formation flight of Unmanned Aerial Vehicle.
采用极值搜索方法，解决无人机紧密编队飞行中僚机所需动力最小化的问题。
To birds native to the country it will seem harmful, for through their dread of its shadow they will lose their power of free flight.
对于本国的鸟，它会视之为有害，因为通过它们对它的影子的恐惧，它们会失去了自由飞行的力量。
Available power plays an important role in the design of a solar powered aircraft which is capable of continuous flight.
精确估算昼夜飞行太阳能飞机的可用功率是太阳能飞机设计中的重要问题之一。
An approach based on extremum seeking algorithms for the minimum power demand of the wingman in formation flight of an UAV is presented.
针对无人机近距离编队飞行问题，采用极值搜索算法，解决其中僚机所需动力最小化的控制问题。
The aircraft electric power source system is an important part of the on board equipments, which will affect the normal and secure flight of the airplane.
航空电源系统是机上设备的重要组成部分，任意一个环节出现故障，将会影响整个飞机系统的正常安全运行。
"We want to take advantage of the autorotation mode since it doesn't require power for flight," he said. "If we can find a vertical column of air, it can stay aloft indefinitely."
“因为它不需要飞行的电力，我们希望能发挥自旋模式的优点，”他说，“如果我们可以找到竖直而行的空气，它可以永远停留在空中。”
Man's flight through life is sustained by the power of his knowledge.
生命航程是知识的能量支持的。
The products are widely used in all kinds of fields such as machinery, chemistry, metallurgy, electric power, shipping, space flight, medical application and electronics.
广泛应用于石油、化工、电力、冶金、船舶、航空航天、医药、电子等工业的密封领域。
It investigates influence of the factors such as engine power, airspeed and flight altitude on the tail rotor failure flight test.
探讨了发动机功率、空速、飞行高度等因素对尾桨故障试飞的影响。
Natural disasters, nuclear power safety, and the administration of safety of railroads, flight and navigation by water shall be dealt with according to the related regulations.
自然灾害、核电安全和铁路、航空、水上运行的安全管理根据有关规定办理。
As the power source of the aircraft flight control system and landing gear loads, aircraft hydraulic system plays a key role for the safety of aircraft flying.
飞机液压系统作为飞机飞行控制系统和起落架等负载的动力源，对飞机的安全飞行起着关键的作用。
This dissertation proposes a flapping control mechanism to solve the flight power problems in hovering flight control of the insect-like flapping micro aerial vehicles(IFMAVs).
仿真结果验证了此操控机制可以较好地解决仅一对翼的仿昆扑翼飞行器飞行动力问题。
The hot-air balloon doesn't depend on power, but float by means of wind. Because the wind direction and speed vary with the height, the driver can choose the proper height as the flight required.
但是，由于风在不同的高度有不同的方向和速度，驾驶员可以根据飞行需要的方向选择适当的高度。
A bus-structure flight control system using DSP as processor is designed, which aims at the demands of power, cost and integration from small Unmanned Aerial Vehicle(UAV).
针对小型无人机控制系统对功耗、成本、可集成性等的较高要求，设计了一种基于DSP芯片TMS320F2812的总线式飞行控制系统。
Check the battery and power plug are fastened. Vibration and violent flight may cause the plug loose and result out of control.
确认电池及电源接头是否接触良好、稳定牢固，飞行中的震动或激烈动作的飞行，可能因接头松脱造成失控。
Missions for study of the Moon and interplanetary flight required re-equipping the launch vehicle with a third stage to increase its power-mass characteristics.
根据月球研究和行星际飞行任务的需要，为了提高火箭的推重比，要为运载火箭新安装一个第三子级。
Reliable operation of the aircraft power distribution system (APDS) is critical to the flight safety of a plane.
飞机配电系统(APDS)的可靠运行的飞机的飞行安全是至关重要的。
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