螺桨毂盖，机头整流罩某些飞机上装于螺旋桨叶毂上的整流罩。
A fairing fitted over the hub of the propeller in some aircraft.
本文用试验模态分析技术研究了螺桨桨叶振动特性。
The vibration characteristics of propeller blades have been investigated by using experimental modal analysis technique.
本文用试验模态分析技术研究了螺桨桨叶振动特性。
The vibration characteristics of propeller blades have been investigated by using experimental modal analysis technique.
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