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| ultrasonic motor (Aiduza) | |||
piezoelectric motor (An ultrasonic motor is only a specific type of a piezo motor.  wikipedia.org SemperDolens); piezo motor (An ultrasonic motor is only a specific type of a piezo motor. wikipedia.org SemperDolens) | |||
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| ultrasonic motor (Aiduza) | |||
| piezoelectric motor (An ultrasonic motor is only a specific type of a piezo motor. wikipedia.org SemperDolens); piezo motor (An ultrasonic motor is only a specific type of a piezo motor. wikipedia.org SemperDolens) | |||