flapping

v.

（使）上下左右移动( flap的现在分词 )；轻拍；焦急，焦虑；振（翅）

skin flap皮瓣

pocket flap袋盖

valve flap阀瓣

flap gate铰链式闸门；舌瓣闸门；翻转板

flap valve瓣阀；片状阀

flap wheel翼片砂轮

Propulsion of a flapping and oscillating airfoil
Flapping and flexible wings for biological and micro air vehicles
An aerodynamic model for flapping-wing flight
Current sheet flapping motion and structure observed by Cluster
Corner flapping: a simple and fast algorithm for exhaustive generation of ring conformations
The flapping shear layer formed by flow separation from the forward corner of a square cylinder
Simulation of a Flapping Flexible Filament in a Flowing Soap Film by the Immersed Boundary Method
Simulation of a flapping flexible filament in a flowing soap film by the immersed boundary method
Flying not flapping: a strategic framework for e-learning and pedagogical innovation in higher education institutions
Fluid dynamics of flapping aquatic flight in the bird wrasse: three-dimensional unsteady computations with fin deformation