叶片元素理论的方法与动量原理的方法相反，因为它关注的是由流体运动导致叶片产生的力。
The approach of blade-element theory is opposite that of momentum theory since it is concerned with the forces produced by the blades as a result of the motion of the fluid.
叶片元素理论的方法与动量原理的方法相反，因为它关注的是由流体运动导致叶片产生的力。
The approach of blade-element theory is opposite that of momentum theory since it is concerned with the forces produced by the blades as a result of the motion of the fluid.
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