As feathers became larger over time, flapping flight evolved and birds finally became fully air-borne.
随着时间的推移，羽毛变得越来越大，扑翼飞行逐渐发展，鸟类最终完全可以在空中飞行。
Because they were bipedal, their arms were free to evolve flapping flight, which cannot be said for other reptiles of their time.
因为它们是两足动物，它们的手臂可以自由地进化出拍打的翅膀，这在当时的爬行动物中是不可能的。
As micro flapping flight is investigated further, its control is paid more attention to.
随着微扑翼飞行器研究的不断深入，对其控制问题研究已引起了人们的重视。
Based on the mass properties of each component of a flapping vehicle are generally measurable and constant we set up the corresponding equations of motion for flapping flight.
基于各部件质量的可测性且为常数的特点建立相应的扑翼运动方程。
These conclusions illustrated by the wing behavior at level flight but the described properties and relationships give the opportunity to explain the other types of modes of the flapping flight.
这些结论说明了机翼的行为在水平飞行，但所描述的属性和关系的机会提供给解释其他类型的模式，该扑飞行。
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。
The new work, Daniel says, uncovers the flight signatures of flapping, flexible wings.
丹尼尔说，这项新的研究揭示了拍动式柔性翼的飞行特征。
Some scientists argue that feathered dinosaurs evolved flight from the ground up, flapping their feathered arms as they ran.
一些研究者认为羽毛恐龙是从零开始进化出飞行能力的，它们在奔跑中会拍动自己带羽毛的前肢。
Furiously flapping, a chukar partridge speeds up a ramp at the University of Montana flight lab.
在蒙大拿大学飞行实验室中，一只石鸡拼命扇动翅膀加速冲上斜坡。
Despite these limitations, the model insect proves that swallowtails still achieve forward flight with simple flapping motions, say the researchers.
尽管有这些局限，这个昆虫模型证明了燕尾蝶只需简单地轻拍翅膀便能向前飞行。研究者们说。
Under these conditions, flapping, birdlike flight might well have some benefits over propeller-driven or helicopter flight.
在这种情况下，拍击，像鸟儿一样飞可能比螺旋桨推进飞行要好些。
But the ability that a lot of engineers would really like to put into robots is the flapping-wing flight of insects, with its attendant ability to hover.
但是很多工程师真正想做的是为机器人装上飞行昆虫的振翅，使其具备飞行的能力，同时具有空中盘旋的功能。
The flight mechanism of birds and big insects was probed valuably, and airframe dynamics and airfoil aerodynamics of Flapping Wing Micro Aerial Vehicle (FWMAV) were researched.
对鸟和昆虫的飞行机理进行了有价值的探讨，并对扑翼式微型飞行器机体动力学和机翼空气动力学进行了详细的分析。
The flapping-wing flight mechanism of animal is investigated in particular, and the results provide a theory foundation for developing BFAR.
重点研究了动物扑翼飞行机理，为研制仿生扑翼飞行机器人设计提供了理论依据。
When the speed of AUV is zero or low speed, lift is produced by the vibration of fin stabilizer at the horizontal position, which is similar to the flapping wing flight of insects and birds.
当航速为零时，则是通过鳍在水平位置附近的上下振动来产生升力，与鸟类和昆虫的扑翼飞行相似。
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。
In particular, expressions of flapping coefficients are derived, including the effect of variable induced velocity distribution but in terms of blade parameters and flight parameters only.
特别是在挥舞系数的表达式中，考虑了诱导速度的变化，但直接与桨叶参数和飞行参数有联系。
The study of insect-imitation flying robot, which implement s its flight and control by means of flapping-wing movement, is a foreside task to be subjected to close attention in robotic field.
通过拍翅运动实现飞行和控制的仿昆飞行机器人研究，是机器人领域备受关注的前沿课题。
When flapping-wing flight at small attack Angle, wing had wing-blade improve effectively aerodynamic characteristic of flapping-wing.
当扑翼在小迎角飞行时，机翼带翼刀可以有效地改善扑翼的气动特性。
When flapping-wing flight at small attack Angle, wing had wing-blade improve effectively aerodynamic characteristic of flapping-wing.
当扑翼在小迎角飞行时，机翼带翼刀可以有效地改善扑翼的气动特性。
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