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the yield of products didn¡¯t improve  relatively with expanded the reaction time and  temperature increased ¡£
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9Â¥2010-08-05 11:15:26
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hekai16

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the reaction time was extended and the reaction temperature  is increased , while ,the yield of the product is not corresponding improved
2Â¥2010-08-04 20:51:07
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hekai16

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3Â¥2010-08-04 20:54:29
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charleygan

ÖÁ×ðľ³æ (ÖøÃûдÊÖ)

chlgan


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The reaction time is postponed and temperature is increased, but the yield is not increased relatively.
4Â¥2010-08-04 20:56:43
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