nondestructive tests

It is showed by the analytical results that ultrasonic wave in non-destruction and micro- destruction of the built structure is applied widely.

分析了超声波对混凝土结构和钢结构内部缺陷的检测 ,分析结果表明 ,超声波在已建结构非破损、微破损检测中有着广泛的应用。