[建]?扶手螺栓
... 扶手空间 handrail space 扶手螺栓 handrail bolt 扶手螺栓旋凿 handrail punch ...
After several failed attempts to unscrew the bolt on the handrail, the spacewalkers ended up tearing it off with brute force.
BBC: Brute force helps Hubble renewal
Work ran over by 90 minutes due to a tool running low on battery power and a particularly awkward bolt securing a handrail that needed to be removed.
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