researching ultrasonic Doppler effect;ascertaining the threshold of audibility and resolving power.
超声的多普勒效应研究及闻阈和人耳辨本领确定。
researching ultrasonic Doppler effect;ascertaining the threshold of audibility and resolving power.
超声的多普勒效应研究及闻阈和人耳辨本领确定。
声明:以上例句、词性类均由互网资源自动生成,部未经过人工审核,其表达内容亦不代表本软件的观点;若发现问题,欢迎向我们指正。