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发明名称
METHOD OF MEASURING DISPLACEMENT AMPLITUDE OF VIBRATING SURFACES IN ELECTROMECHANICAL SOUND TRANSDUCERS
摘要
申请公布号
PL265347(A1)
申请公布日期
1988.11.10
申请号
PL19870265347
申请日期
1987.04.24
申请人
发明人
分类号
G01H;G01H1/00;G01M7/02;(IPC1-7):G01H/
主分类号
G01H
代理机构
代理人
主权项
地址
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