即使有一个好的发动机，如果没有合适的螺旋桨来带动，飞机的性能也会大打折扣。
Even if has a good engine, if does not have the appropriate propeller to lead, the airplane performance also can sell at a discount greatly.
带动力实验进行洞壁干扰修正时，必须考虑螺旋桨滑流的影响。
The effect of propeller induced slipstream to the experiment data must be corrected.
这个游泳助推器就是用腿、脚的蹬力带动螺旋桨旋转，产生较大的推力。
The booster for swimming is characterized in that the propeller is driven to rotate by utilizing pedaling force of legs and feet. Thus, the great thrust is generated.
这个游泳助推器就是用腿、脚的蹬力带动螺旋桨旋转，产生较大的推力。
The booster for swimming is characterized in that the propeller is driven to rotate by utilizing pedaling force of legs and feet. Thus, the great thrust is generated.
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