工业上面临的一个特别重要的问题是如何测量管壁和容器的壁厚,因为它们的内壁容易腐蚀。这种腐蚀除非切开管子和容器,否则肉眼是探测不到的。结构钢梁也经常受到腐蚀而减少其厚度,如果不检查,腐蚀将使结构强度减弱而造成断裂。从安全和经济考虑,需要经常地检查铺设的金属管道和容器以及结构所受到的腐蚀。超 A particularly important issue that is facing the industry is how to measure the wall thickness of the pipe wall and the container because their inner walls are easily corroded. This corrosion can not be detected by the naked eye unless the tube and container are cut open. Structural steel beams are also often subject to corrosion to reduce their thickness, if not checked, corrosion will weaken the structure and cause fracture. From safety and economy considerations, there is a need to regularly inspect the corrosion of laid metal pipes and vessels and structures. ultra