The system includes a line-focus PVDF transducer, a four-axis precise moving framework, an NI PXI bus embedded controller, an ultrasonic pulse generator/receiver and a digital oscilloscope.是什么意思_The system includes a line-focus PVDF transducer, a four-axis precise moving framework, an NI PXI bus embedded controller, an ultrasonic pulse generator/receiver and a digital oscilloscope.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句