本发明涉及道闸闸杆，具体的说是涉及一种具有伸缩结构的道闸闸杆。

The invention relates to a road gate handler, in specific to a road gate handler with an expansion structure.

youdao

本发明涉及道闸闸杆，具体的说是涉及一种具有伸缩结构的道闸闸杆。

The invention relates to a road gate handler, in specific to a road gate handler with an expansion structure.

youdao