敞水螺旋桨的脉动速度计算结果与试验结果吻合良好。
Agreement between the numerical results of reduced velocity around an open-water propeller and the measurements is satisfactory.
被称作“阿基米德举水螺旋”的扬水机是为了将水从大船的船舱中排出而发明的。
Known as the "Archimedes screw give water," the machine is pumping water from the cabin of the ship from the invention.
在螺旋桨是非常有效的推水。
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