The shape of blade form centerline determined the work regular of blade to airflow.
叶型中线的形状决定了叶片对气流的作功规律。
Alternatively, an elastomeric material can be coated onto the blade or form the blade itself.
可替代地，可将弹性材料涂在桨叶上或形成桨叶本身。
Alternatively, an elastomeric material can be coated onto the blade or form the blade itself.
可替代地，可将弹性材料涂在桨叶上或形成桨叶本身。
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