自从科学远景規划制定以来,在短短的三年里,超声的研究在我国已由几乎空白的状态建立起了一定的基础,超声的应用也已在多方面展开。在国外,超声学也还是一門年經的学科。虽然在上一世紀末实驗室里也曾試驗过超声,但超声的实际应用还是在本世紀20年代才开始的。 Since the formulation of the long-term scientific vision, in a short period of three years, the study of ultrasound has established a certain foundation in our country from an almost blank state. The application of ultrasound has also been carried out in many aspects. Abroad, ultrasound is still a subject of many years. Although ultrasound was also tested in laboratories at the end of the last century, the practical application of ultrasound was not until the 1920s.