With a crash barrier outside the surface treatment of materials used to waterproof the material.

室外用防撞护栏的表面处理所用原料为防水性的材料。

youdao

With a crash barrier outside the surface treatment of materials used to waterproof the material.

室外用防撞护栏的表面处理所用原料为防水性的材料。

youdao