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"YUAN QIHUAN"
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"YUAN QIHUAN"
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High efficiency and shock-resistant ozone generator
by
QIHUAN YUAN
Year of Publication
10.10.2001
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Tiselius cell for producing acid-base
by
QIHUAN YUAN
Year of Publication
02.02.2000
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New method and apparatus for producing acid and alkali
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QIHUAN YUAN
Year of Publication
01.09.1999
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Vivi card dual finger print taking instrument
by
NIU XUAN
,
YUAN QIHUAN
,
WANG YUNMU
Year of Publication
13.10.1993
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Washer for seperating oxygen and hydrogen
by
YUAN QIHUAN
,
MA FEI
,
JIANG YAXIONG
Year of Publication
15.01.1997
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Format
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chemistry
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Topic
chemistry
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metallurgy
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apparatus therefor
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electrolytic or electrophoretic processes
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electrolytic or electrophoretic processes for the productionof compounds or non-metals
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esp@cenet
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