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发明名称
摘要
申请公布号
JPH0669837(U)
申请公布日期
1994.09.30
申请号
JP19930878793U
申请日期
1993.03.04
申请人
发明人
分类号
G01N29/24;H04R17/00;(IPC1-7):G01N29/24
主分类号
G01N29/24
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