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发明名称
ACOUSTO-ULTRASONIC TESTING INSTRUMENT WITH COUPLING CONDITION MEASUREMENT
摘要
申请公布号
GB9126679(D0)
申请公布日期
1992.02.12
申请号
GB19910026679
申请日期
1991.12.16
申请人
LIU, SHIFENG
发明人
分类号
G01N29/28
主分类号
G01N29/28
代理机构
代理人
主权项
地址
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