It's an ULTRASONIC microphone so we can hear the baby's heartbeat.
Meaning and definitions of ultrasonic, translation in Lao language for ultrasonic with similar and opposite words. Also find spoken pronunciation of ultrasonic in Lao and in English language.
What ultrasonic means in Lao, ultrasonic meaning in Lao, ultrasonic definition, examples and pronunciation of ultrasonic in Lao language.