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发明名称
摘要
申请公布号
JPH0131963(Y2)
申请公布日期
1989.10.02
申请号
JP19820109572U
申请日期
1982.07.20
申请人
发明人
分类号
H04R1/00;G01N29/04;G01N29/24;G01N29/26;G01N29/28;(IPC1-7):G01N29/04
主分类号
H04R1/00
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代理人
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