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发明名称
Educational apparatus for demonstrating the entropy concept
摘要
申请公布号
US3209470(A)
申请公布日期
1965.10.05
申请号
US19630302990
申请日期
1963.08.19
申请人
PLUMB ROBERT C
发明人
PLUMB ROBERT C.
分类号
G09B23/06
主分类号
G09B23/06
代理机构
代理人
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