综合利用超声波、冲击回波、探地雷达等手段研究了凝结硬化早期混凝土内部的结构特征。

Comprehensive utilization of non-destructive methods such as ultrasonic, impact echo and ground penetrating radar to study the characteristics of the internal structural of early hardened concrete.

youdao

综合利用超声波、冲击回波、探地雷达等手段研究了凝结硬化早期混凝土内部的结构特征。

Comprehensive utilization of non-destructive methods such as ultrasonic, impact echo and ground penetrating radar to study the characteristics of the internal structural of early hardened concrete.

youdao