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“从茶叶中提取咖啡因”微型实验的改进
2021-02-25 11:27:47热度:257°C
讨论了咖啡因提取采用微型化后所用装置及提取方法的改进.完成机构:保定师范专科学校化学系,河北保定071051
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SQL Error: select id,classid,MATCH(title) AGAINST('01162051 20511872 18725022 50225448 54484465 44654001 40013107 31072340 23405082 50820117 01174602' IN BOOLEAN MODE) as jhc from ***_enewssearchall where (id<>239381) and MATCH(title) AGAINST('01162051 20511872 18725022 50225448 54484465 44654001 40013107 31072340 23405082 50820117 01174602' IN BOOLEAN MODE) order by jhc desc,infotime desc limit 0, 6相关推荐
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