The basic principle, generation, transformation and application of optical vortex beams and optical vortices are briefly summarized, as well as their progress.
就涡旋光束和光学涡旋的基本特征和原理进行了概述，对其产生、传播及应用进行了介绍。
2
The results show that the most significant feature of turbulent free jet is the intermittently generation, shed of elliptic vortex rings, and once they generate they shed immediately.
研究结果表明：湍流椭圆自由射流的最显著特征是椭圆涡环的间歇产生、脱落，这些涡环一旦产生立即脱落。
3
The generation, shedding and movement of the single pair vortex street formed in the wake are revealed and discussed.