如果在修复古建筑时,所用的水泥受天气或干燥过程的影响而产生不可预料的膨胀,那它可能就会对建筑物产生较大的破坏。现在,德国奥尔登保大学的研究人员开发了一种利用全息原理的视频系统,可以测出建筑结构上小到几微米的形交。人们可以利用这种技术研究水泥的性能,然后再考虑如何利用水泥。该系统能监测因建筑材料的收缩、 If you are repairing a retro building, the cement used will have unpredictable expansion due to the weather or drying process, and it may cause more damage to the building. Now, researchers at the University of Altenbourg in Germany have developed a video system that uses holographic principles to measure structures as small as a few microns in size. One can use this technique to study the properties of cement and then consider how to use cement. The system can monitor the shrinkage of building materials.