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发明名称
摘要
申请公布号
JPS5543552(B2)
申请公布日期
1980.11.06
申请号
JP19740040551
申请日期
1974.04.09
申请人
发明人
分类号
H04R1/00;G01D5/48;G01N27/00;G01W1/00;G08C23/00;H04R1/32
主分类号
H04R1/00
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