床可以拉起来了，而且还推出向后和向前的曲柄在主室的空间。
The bed can be pulled up and down, but also rolled backward and forward with the crank to make space in the main room.
本机构由两组曲柄滑块机构串接而成，双作用气缸驱动，实现机械手的主爬升运动。
The mechanism driven by a bidirectional pneumatic cylinder for climb robot is composed of two groups of slider-crank mechanism in series.
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