During the measurement of welding contractiondistortion for stator in a large hydropower station, the method is used well.
在对某大型水电站焊接收缩变形测量中，该方法得到了很好的应用。
2
The increasing use of Ti for multiple-unit fixed prosthesis require a method to join two and more unites in a restorative prosthesis to reduce the contraction and distortion in casting process.
This paper is an analysis and summary about the causes of distortion cracks, including those caused by contraction of concrete and variation of temperature, and uneven settlement of foundation.