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随着科学技术的不断发展,对于位移、振幅这一类长度变化量的测量方法越来越多。但在工程实测中,有的位移测量十分困难,如高层建筑在随机因素作用下的脉动与在台风作用下的大幅振动等,这一类型的被测量有如下几个特点: 1.这一类被测量一般以大地作为相对参
With the continuous development of science and technology, there are more and more methods to measure the variation of length such as displacement and amplitude. However, in engineering survey, some displacement measurement is very difficult, such as the pulsation of high-rise buildings under the random factors and the large vibration under the action of typhoon, etc. This type of measurement has the following characteristics: 1. This type To be measured generally to the earth as a relative reference