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本文从纵扭振动换能器理论出发，设计了一种新的复合换能器型超声马达，并进行了实验研究，测出了其主要性能参数．
Based on the theory of longitudinal-torsional vibrating transducer, a new composite transducer-type ultrasonic motor is designed and experimentally studied. The main performance parameters are measured.