Results Using ultrasonic wave extraction, the content of total flavone is the highest among four technological process.
结果用超声法测得的总黄酮含量最高。
The cohesiveness occurred in Chinese medicine is a problem for the filter in this machine. But, by using ultrasonic wave cleaning, the filter can be recovered.
中药的粘结对自动真空上料机的过滤器是一个考验，使用超声波清洗，有效解决过滤器的恢复问题。
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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