查询词典 olefins
- 与 olefins 相关的网络例句 [注：此内容来源于网络，仅供参考]
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Generally the catalysts have high activity and good selectivity. At present the coupling reactions of organoborahes with terminal olefins s acid chlorides and aryl halides play an important synthetic approaches in organoborane chemical. The catalysts can be used by many kinds of organometal compounds such as: irons cobalt nickel ruthenium rhodium palladiums titaniums zirconiums tins indium and lithium organic compounds; The achievement has been amazed in preparing of unsaturated or saturated compounds and in synthesizing of natural products bioactive molecules and chiral compounds.
目前，卤代烃与不饱和烃的偶联反应和有机硼试剂与酰卤和卤代烃的偶联反应已成为有机合成的研究热点，此类反应可用铁、钴、镍、钌、铑、钛、锆、锡、铟、锂等多种有机金属化合物来催化，用于形成含饱和或不饱和C-C键的化合物，并已在天然产物、液晶、具有生理活性物质和手性化合物的合成中应用。
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Prepare for and participate in training courses about olefins unit.
准备并参加各装置的培训课程。
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This catalyst is designed to ensure the reduction of the olefins in gasoline.
为一种可降低汽油烯烃含量的催化剂。
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With the increase of Ce content, light olefins selectivity increases too.
随铈含量的增加，催化剂的烯烃选择性有所增加。
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In order to meet the environmental protection demand of automobile exhaust emission.the olefins in gasoline has to be controlled.
为满足日趋苛刻的汽车尾气环保要求，汽油烯烃含量也必须严格控制。
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The recyclable catalytic systems are able to be applied to a wide range of olefins.
该催化体系优于目前国内外相关研究报道的催化体系。
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The process formation of branched PE and the formation ofα-olefins were studied.
并且本文研制的α-二亚胺镍催化剂在聚合1h后仍保持较高的催化活性。
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Olefins are important materials for modern petrochemical and fine chemical industry, anda large amount of products.
烯烃是现代石油化工、精细化工的重要原料，需求量很大。
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With the increase of Mn content, light olefins selectivity increases and catalytic activity decreases.
随锰含量的增加，催化剂的烯烃选择性有所增加，但催化活性下降。
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MTOis the most hopeful technology that substitute for the way of petroleum to olefins.
作为MTO反应的核心，催化剂的合成成为人们研究的重点。
- 推荐网络例句
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For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether
年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。
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Eph. 4:23 And that you be renewed in the spirit of your mind
弗四23 而在你们心思的灵里得以更新
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Lao Qiu is the Chairman of China Qiuyang Translation Group and the head master of the Confucius School. He has committed himself to the research and promotion of the classics of China.
老秋先生为中国秋阳翻译集团的董事长和孔子商学院的院长，致力于国学的研究和推广。