分布排列 meaning in Chinese

distribution permutation

In recent several decades , ultrasonic phased arrays had been applied to many medical specialties and nondestructive evaluation ( nde ) . an ultrasonic phased array consists of multiple elements which are usually cut or etched from a single piezoelectric plate of lead zirconate titinate ( pzt ) . the element thickness determines the operating frequency of the transducer
近年来，随着科学技术的飞速发展，超声相控阵已广泛的应用在医学、无损检测等方面，所谓相控阵，就是由多个压电陶瓷片(阵元)按一定的分布排列，然后逐次按欲先规定的延迟时间激发，就可以实现声波的聚焦。