ultrasonic tracking technique超声波: ultrasonic; pretersonic; sup ...跟踪: follow the tracks of; tail a ...技术: technology; skill; technique ...声波跟踪: sound tracking多普勒跟踪技术: doppler tracking technique下载手机词典可随时随地查词查翻译关注微信公众号:chachacidian,回复:超声波跟踪技术,即可在微信中查询翻译