1) zinc coated bolt
镀锌螺栓
2) galvanized iron bolt
镀锌铁螺栓
3) galvanized double-J bolt
镀锌双钩螺栓
4) galvanized mushroom head bolt
镀锌圆头螺栓
5) galvanized roofing bolt
镀锌瓦楞螺栓
6) galvanized single-J bolt
镀锌单钩螺栓
参考词条