Vane axial fan with optional fan pitch control.
具有可选风扇节距控制的翼式轴流风扇。
The pump having the Angle adjustable vane is called the variable pitch vane type, and having the non-adjustable vane is called the fixed vane type.
循环水泵可分为拥有叶片角度调节装置的可调叶片式，和叶片不可调节的固定叶片式。
The influence of control method for pitch on power flowing and rotating speed of the vane are focused.
重点阐释了风力发电机变桨矩控制方法对风力发电机组的功率流动、叶轮转速变化的影响。
The influence of control method for pitch on power flowing and rotating speed of the vane are focused.
重点阐释了风力发电机变桨矩控制方法对风力发电机组的功率流动、叶轮转速变化的影响。
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