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maocheng0102
Ìú¸Ëľ³æ (ÖøÃûдÊÖ)
Stephen Curry¿Ø
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- Ìû×Ó: 1966
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- ×¢²á: 2012-03-26
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°®ÓëÓêÏÂ: ½ð±Ò+1 2013-07-01 19:32:56
mahui0905: ½ð±Ò+5, ·ÒëEPI+1, ¡ï¡ï¡ïºÜÓаïÖú 2013-07-02 21:42:32
°®ÓëÓêÏÂ: ½ð±Ò+1 2013-07-01 19:32:56
mahui0905: ½ð±Ò+5, ·ÒëEPI+1, ¡ï¡ï¡ïºÜÓаïÖú 2013-07-02 21:42:32
| This paper studies the 5 - methyl - 1,3,4 - thiadiazole and 5 - ethyl-2 - amino-1, 3,4 - thiadiazole, 2 - amino -5 - (3 - pyridyl) -1,3,4 - thiadiazole, 2 - amino -5 - (4 - pyridyl) -1,3,4 - thiadiazole physicochemical properties and synthesis route of the nitrogen-containing heterocyclic compound synthesis method to identify these four compounds optimized synthesis route and increase yield method for the development of nitrogen-containing heterocyclic compounds in agriculture and other fields provide a theoretical basis. |

2Â¥2013-07-01 17:05:36














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