According to the controlling requirement of megawatt wind driven generator with variable propellerpitch of horizon axis, the hydraulic control system of a variable propellerpitch is designed.
针对兆瓦级水平轴变桨距风力发电机的控制要求,设计了变桨距液压控制系统。
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"It's a variable-pitchpropeller, which is like having gears on a bike," Land says.