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Aiming at the problem whether droplets from anti-drift nozzle contain air bubbles, the experiment through the methods of silicone oil, High-speed Cameras, Laser Particle Analizer, then compared the droplets from the blocked-pore nozzles and the opened-pore nozzles, at last we combined all the results of various methods to analyse the structure of the droplets, as a result, the droplets from the ID nozzle do have the air bubbles.