1 | ON THE WING The wake of a hovering rufous hummingbird, top. | |
2 | The wake of a hovering rufous hummingbird. Yellow vectors show air velocity, revealed by particle image velocimetry. | |
3 | Wake flow of desorption and washing of regeneration were reused to reduce the cost and pollution. | |
4 | Finally, a model is established to determine launch parameter of wake - guided torpedo in fan-shaped salvo and parallel salvo. | |
5 | The tip of the contrail is moving far too slowly to be a rocket. |