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发明名称
COMPOSITE CERAMICS WITH IMPROVED TOUGHNESS AND THEIR PRODUCTION
摘要
申请公布号
KR1019900007839(B1)
申请公布日期
1990.10.20
申请号
KR1019870700874
申请日期
1987.09.26
申请人
发明人
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主分类号
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