- 护栏: guardrail; guard bar; rail
- 螺栓: bolt; screw bolt; threaded b ...
- 护栏: guardrail; guard bar ; rail
- 螺栓: bolt; screw bolt; threaded bolt 连接螺栓 binder bolt; connecting bolt; 地脚螺栓 foundation bolt; 螺栓保险 bolt-lock; 螺栓柄 grip of bolt
- 侧护栏: side guard
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