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发明名称
PENETRATION
摘要
申请公布号
JPH02147988(A)
申请公布日期
1990.06.06
申请号
JP19880300527
申请日期
1988.11.30
申请人
HITACHI LTD
发明人
KASAI SHOZO;IWASAKI TOSHIO
分类号
G21D1/00;G21C13/036
主分类号
G21D1/00
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