- A machine for propelling an aircraft or a boat, consisting of a power-driven shaft with radiating blades that are placed so as to thrust air or water in a desired direction when spinning.螺旋桨：推进飞行物或船只的机构，由动力推动的轴和当旋转时按理想的方向注入水或空气的呈辐射状的桨叶组成
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- Cleveland Community College
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- Cleveland State Community College
- Cleveland State University
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