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- selenium dialkyl 二烷基硒
- Alkyl balides react with sodium borohydride and selenium in the presence of solid sodium hydroxide to give dialkyl selenides in excellent yields. 在固体氢氧化钠存在下,卤代烃及用氢化钠与硒粉作用,在乙醇溶液中制得二烃基硒醚。
- Study of selenium content in Osmunda L. 薇菜含硒量的研究。
- Selenium Deficiency the Inner Cause of Avian Flu? 是什么导致禽流感?
- What fruit contains selenium element most? 什么水果含硒元素最多?
- What fruit filling zinc and Selenium? 什么水果补锌和硒?
- Selenium is a photoconductive substance. 硒是一种光电导物质。
- Diaryl nitroxides are even more stable than the dialkyl nitroxides. 二芳基氮氧化物自由基比二烷基氮氧化物自由基还要稳定。
- The selenium are supplied in the form of sodium selenite. 试验中的硒元素以亚硒酸钠的形式提供。
- Thus the term dialkyl carbonate includes, for example, methyl ethyl carbonate. 因此术语二烷基碳酸酯包括,例如甲基乙基碳酸酯。
- Selenium is an important trace element for human heal th. 硒是一种重要的人体必需微量元素。
- Selenium films are electrodeposited from a selenious acidsolution. 用亚硒酸溶液电镀硒薄膜。
- Selenosis is a serious disease caused by taking too much selenium. 服用过量的硒导致严重的疾病--硒中毒。
- Se agents commonly used in new thin-bao, selenium and other vicon. 常用的补硒制剂有新稀宝、硒维康等。
- Calcium, iron, zinc magnesium, selenium, and various vitamins! 钙,铁,锌镁,硒,和各种维生素!
- Therefore,selenium has important role in preventing and curing the tumors. 因此,硒在肿瘤的防治中具有非常重要的作用。
- Therefore, selenium has important role in preventing and curing the tumors. 因此,硒在肿瘤的防治中具有非常重要的作用。
- Using lower concentration spray twice can increase the selenium content. 采用较低的硒浓度喷施2次,可增加菜心的硒含量。
- This preparation uses dialkyl imidazole salt, alkyl pyridine salt or caprolactam and fatty acid as reactant. 该方法使用带有二烷基咪唑盐、烷基吡啶盐或者己内酰胺和脂肪酸作为反应物。
- The extraction behavior of dialkyl( aryl) Sulfides may be controlled by polar and steric substituents effects. 二烃基(基)醚的萃取行为受极性和空间取代基效应的控制.