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ankang276

½ð³æ (ÕýʽдÊÖ)

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There are MFI-type membranes that separate the n/i-butane mixture (usually used to test the quality of these membranes) at high temperature , others only at low temperature  and others that cannot do this at all.
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zhousun888

ľ³æ (ÕýʽдÊÖ)

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ankang276(½ð±Ò+8, ·­ÒëEPI+1): 2010-09-17 13:36:53
wypward(½ð±Ò+1):лл²ÎÓë 2010-09-17 21:00:47
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