The wholw machine is driven by compressed air and air cylinder is controlled by electromagnetic valve by finishing multiple functions.

设备动力用压缩空气，执行元件用电磁阀控制气缸以完成多项功能；

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The Activity Stacker is a pyramid made of multiple rings that fit onto a soft cylinder.

活动套叠组玩具是一组多环组成的金字塔，这个金字塔可套在一个软质的圆柱体上。

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The whole machine is driven by compressed air and air cylinder is controlled by electromagnetic valve by finishing multiple functions.

设备动力用压缩空气，执行元件用电磁阀控制气缸以完成多项功能；

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The company received a patent in 1865 and created one of the most important lock inventions, the Yale cylinder lock, a lock mechanism that uses pins of multiple lengths to prevent the lock from opening without the correct key.

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