人类旋转螺丝使其前进，而象鼻虫的肌肉沿着腿的方向牵拉，使其旋转。
Humans turn a screw to make it move along its length, but the weevil's muscles pull along the length of its leg to make it turn.
第三步：从底座方向上再取下螺丝
通过消除四个埋头螺丝保持精确一致，该活塞杆和模具板可旋转方向没有拆卸气缸90度。
By removing the four countersunk screws that maintain exact alignment, the orientation of the piston rods and tooling plate can be rotated 90 degrees without cylinder disassembly.
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