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同时介绍了超声波换能器(探头)及其等效电路。
It also introduces ultrasonic transducer and its equivalent circuit.
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实验中，采用直探头与可变角探头作为超声波换能器做了接收宽带兰姆波信号的对比。
In the experiment, both the normal probe and variable Angle probe are used to receive broadband Lamb wave signals.
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