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发明名称
Screw-type rotary fluid machine and method of treating rotor surfaces thereof
摘要
申请公布号
GB9407828(D0)
申请公布日期
1994.06.15
申请号
GB19940007828
申请日期
1994.04.20
申请人
HITACHI, LTD.
发明人
分类号
F04C18/08;F04C29/02
主分类号
F04C18/08
代理机构
代理人
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