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发明名称
FERROMAGNETIC MATERIAL FOR MEASURING CEMENT QUANTITY AND METHOD FOR DISPERSING THIS MATERIAL INTO CEMENT MIXTURE
摘要
申请公布号
JPH02181651(A)
申请公布日期
1990.07.16
申请号
JP19890001836
申请日期
1989.01.06
申请人
NEC CORP
发明人
EMA SHUNICHI;TSUTAOKA TAKANORI;ISHISAKI CHIHARU
分类号
G01N33/38;B28C7/06
主分类号
G01N33/38
代理机构
代理人
主权项
地址
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