A propeller assembly comprising.
螺旋桨大会的组成如下。
A propeller assembly, according to claim 3, wherein each layer of viscoelastic material is of uniform thickness.
螺旋桨大会，根据要求3，其中每一层粘弹性材料是均匀的厚度。
A propeller assembly, according to claim 3, wherein each layer of viscoelastic material is of uniform thickness.
螺旋桨大会，根据要求3，其中每一层粘弹性材料是均匀的厚度。
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