flexural mode meaning in Chinese

挠曲型
弯曲振动方式
弯曲振动模

Finally , some important conclusions were drawn , that is , using distributed pzt transducers , ultrasonic guided waves are generated and received in a pipe . usually , there are many different modes of guided wave propagating in the pipe and these modes are generally dispersive , the specific exciting signal of a harming windowed toneburst with a central frequency of 70khz for decreasing the effect of dispersion was selected . and guided wave are generated using 16 distributed pzt transducers in a circumferential direction for suppressing flexural modes
首先，对当前本课题研究领域的进展作出综述，并简要介绍与超声导波技术相关的理论基础；其次，建立了一套有效的实验装置，在此实验装置基础上，重点研究了采用分布式pzt传感器在管中激励和接收特定模态超声导波的方法：根据在管状波导中传播的超声波具有频散现象及多模态特征，选择具有单一频率的特定信号激励超声导波，使其频散最小；同时采用分布式传感器抑制不同模态的波型。