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。
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