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发明名称
摘要
申请公布号
JPS6363260(B2)
申请公布日期
1988.12.06
申请号
JP19850259337
申请日期
1985.11.19
申请人
发明人
分类号
B02C18/14;B02C18/00;B02C19/22;B02C21/00
主分类号
B02C18/14
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