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安全技术
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额外的钢丝绳缠绕 / Steel ropes twined between roof and motor frame
4根稳固用钢丝绳 / 4 stabilization ropes
轮毂连叶片防坠钩 / Anti-falling hooks to hub & blade
自锁式输出轴与轮毂连接的传动轴套 /Shaft sleeve with self locking structure
不规则滑孔的叶片摆动限位设计 /Blade up & down swing limitation by slid locking hole

叶片遇撞击时的弹性缓冲装置 / Buffer attached on the hub relieving the impact to fan if be hit

榫卯式叶柄与轮毂锁紧装置  / Inserted, self-locking design of the connection location to fasten the hub & blade handle

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