Using ultrasonic wave technique, a simple, rapid, effective and energy-saving method have been developed for preparing leachate of solid waste samples.
采用超声波技术，建立了一种简便快速、节能安全、实用的固体废物浸出液的制备方法。
Three kinds of nanoparticles were efficiently dispersed into the epoxy resin by using coupling agents and ultrasonic wave.
利用超声波和偶联剂处理的方法，制备了纳米微粒填充环氧树脂基复合材料。
Using ultrasonic wave intelligent distance-measuring sensor and voice record-reproducing circuit, a voice anticollision-prompting device for backing an automobile is designed.
利用超声波智能测距传感器及语音录放电路，设计了机动车倒车防撞语音提示器。
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