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发明名称
摘要
申请公布号
SU463745(A1)
申请公布日期
1975.03.15
申请号
SU19711716466
申请日期
1971.11.18
申请人
发明人
分类号
(IPC1-7):C23B5/20
主分类号
(IPC1-7):C23B5/20
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