自从1960年第一次在实验室观察到激光以来,激光在许多领域得到了应用,1966年首次制造出来的激光流速仪就是其中的一种.在许多生产领域或科学试验中,测量流速是一个重要课题.几十年来,为了满足测量流速的需要,试制成各式各样的流速仪.这些流速仪,绝大多数都存在一个普遍的缺 Laser has been used in many fields since the laser was first observed in the laboratory in 1960 and was one of the first to be made in 1966. In many fields of production or scientific experiments the flow rate is measured as a An important issue. For decades, in order to meet the needs of measuring the flow rate, try to make a wide range of flow meters. The majority of these flow meters, there is a common lack