rotor
柯林斯词典
1. N-COUNT The rotors or rotor blades of a helicopter are the four long, flat, thin pieces of metal on top of it which go around and lift it off the ground. 螺旋桨
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rotor /ˈrəʊtə/ (rotors)
剑桥词典
- a part of a machine that spins , especially the device supporting the turning blades of a helicopter
（机器的）转子，旋转件；（尤指直升机的）旋翼 返回 rotor