Fix - angle adjusting of vanes is more facilitate and prompt than before by controlling hydraulic adjusting system of moving vanes of ventilator , which can owe to combination of hydraulic and computer control technology 利用液压和计算机控制技术的结合,对通风机动叶液压调节系统进行控制,使叶片安装角度的调节更加方便和快捷。