220V Cooling Fan blades carefully calculated

"220V Cooling Fan" of the blades is carefully calculated, deliberately so that the distance between the blades disorganized, presenting a "not equidistant" situation: this is very simple, it is hard to make the rotation of "dota2雷竞技下载 " Wind audio wheel and air generated by "irregular" and become "a" wind, rather than focusing on a band of wind. Noise has two narrowband and broadband noise, narrowband noise regular easy to attract people's attention, annoying; and "dota2雷竞技下载 " broadband noise closer to the nature of the noise situation, though not eliminate, but relatively "Naiting "a little, people are not so upset.