在超声医疗诊断和超声缺陷探伤的断面成象技术中,由单探头的机械扫描发展为多探头的电子扫描,它是探头阵的阵元与物空间的一一对应,由于阵元有限,造成显示线条少,无连续感;而且每一阵元不能做大,影响分辨率。在前述基础上又发展了分组递推式的探头阵。例如:第一次是一到四阵元为一组,第二次是二到五阵元为一组,依次递推,这样阵元可做得小些,也可多些,从而显示线条可多一些,但因受到探头阵尺寸的限制也不能太多。另外还发展了单探 In the ultrasonic medical diagnosis and ultrasonic flaw detection of cross-sectional imaging technology, the development of a single probe mechanical scanning multi-probe electronic scanning, it is a probe array array of objects and space-one correspondence, due to the finite element, resulting in Display lines less, no sense of continuity; and each array element can not be bigger, affecting the resolution. On the basis of the foregoing, a group recursive probe array has been developed. For example: the first one to four elements as a group, the second is a set of two to five elements, followed by recursive, so that array elements can be smaller, but also more, which shows the line can be More, but not too limited by the size of the probe array. In addition also developed a single exploration