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发明名称
ULTRASONIC CALIBRATION ASSEMBLY
摘要
申请公布号
GB1584946(A)
申请公布日期
1981.02.18
申请号
GB19780018655
申请日期
1978.05.10
申请人
WEC
发明人
分类号
G21C17/003;G01B17/00;G01D18/00;G01N29/30;G21C17/00;(IPC1-7):G01S15/02
主分类号
G21C17/003
代理机构
代理人
主权项
地址
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