The thickness of the concrete cover is the reinforcement material that protect the steel reinforced, rusty, slow down.
ผลลัพธ์ (ภาษาอังกฤษ) 2:
The thickness of the concrete-clad steel is a material that protects the steel to corrode slowly.
ผลลัพธ์ (ภาษาอังกฤษ) 3:
The thickness of concrete cover to reinforcement reinforcement material is defending rust down.