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1894

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一种无链条传动城市公共自行车

一种无链条传动城市公共自行车

A chainless city public bicycle

A chainless city public bicycle

一种通过前叉与车梯联动仿转结构控制前叉转动的自行车

一种通过前叉与车梯联动仿转结构控制前叉转动的自行车

A bicycle that controls the rotation of the front fork through a linkage mechanism between the front fork and the ladder.

A bicycle that controls the rotation of the front fork through a linkage mechanism between the front fork and the ladder.

一种连杆式折叠盒自动安全锁紧装置

一种连杆式折叠盒自动安全锁紧装置

An automatic safety locking device for a linkage-type folding box

An automatic safety locking device for a linkage-type folding box

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