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   cyclic ethylene 的翻译结果: 查询用时:0.008秒
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cyclic ethylene
相关语句
  环乙二
     Study on Catalysis Synthesis of Acetoacetic Ester Cyclic Ethylene Ketal
     乙酰乙酸乙酯环乙二缩酮的催化合成研究
短句来源
     The optimum conditions are as follows: the molar ratio of ethyl acetoacetate to alcohol was 1.0∶1.4,the amount of catalyst was 0.5g/0.1mol ethyl acetoacetate,the reaction time was 3h. Ammonium ceric sulfate was a good catalyst for synthesizing acetoacetic ester cyclic ethylene ketal,the yield is over 80.1%.
     实验表明,硫酸铈铵是合成乙酰乙酸乙酯环乙二缩酮的良好催化剂,在酯醇物质的量比为1∶1.4(mol),催化剂用量为0.5g/0.1mol乙酰乙酸乙酯,环己烷10ml,反应时间3h的条件下,收率可达80.1%。
短句来源
     Acetoacetic ester cyclic ethylene ketal was synthesized from ethyl acetoacetate and ethanediol using ammonium ceric sulfate as catalyst . The factors influencing the synthesis were discussed and best conditions were found out .
     以硫酸铈铵为催化剂,通过乙酰乙酸乙酯与乙二醇反应合成了乙酰乙酸乙酯环乙二缩酮,研究了催化剂等有关因素对产品收率的影响。
短句来源
  “cyclic ethylene”译为未确定词的双语例句
     A Projective Model of πMO's Anqle and Sides——The Trigonometrical Function Method of πMO Energy Level and its Coefficients of Cyclic Ethylene
     πMO的角边投影模型——轮烯的πMO能级和系数的三角函数法
短句来源
     With P 2O 5 as catalytic agent and homogeneous design in carrying on the experiment, the reaction conditions for the preparation of cyclic ethylene from dehydration of cyclic ethyl alcohol are studied and optimized, and the most optimal reaction conditions are as follows: catalytic agent: 3.5 g, reaction time: 30 min, reaction temperature: 155℃~160℃.
     以P2 O5为催化剂 ,用均匀设计来安排试验 ,对环已醇脱水制备环已烯的反应条件进行研究 ,并进行优化组合 ,得出反应的最佳条件为 :催化剂 3.5g ,反应时间 30min ,反应温度段为 15 5~16 0℃。
短句来源
     Cyclic Ethylene Urea Finish on Cotton and Viscose Fabrics
     环亞乙基尿素的应用
短句来源
     Preparation of Cyclic Ethylene with Homogeneous Design
     运用均匀设计研究环已烯的制备
短句来源
     A study of the application of cyclic ethylene urea-formaldehyde resin finish on cotton and viscose rayon fabrics has been made.
     根据国內的需要和已有的資料,我們对环亞乙基尿素——甲醛树脂在棉布及人造棉织物上的应用,进行了初步的研究。
短句来源
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  相似匹配句对
     Preparation of Cyclic Ethylene with Homogeneous Design
     运用均匀设计研究环已烯的制备
短句来源
     Cyclic Ethylene Urea Finish on Cotton and Viscose Fabrics
     环亞乙基尿素的应用
短句来源
     D—CYCLIC CRAPHS
     D—Cyclic图
短句来源
     and P(F) is a-cyclic.
     P(F)是无a环的.
短句来源
     in synthesis of ethylene.
     可能在乙烯合成中所起的作用有所不同。
短句来源
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  cyclic ethylene
1.The spectral characteristics of the dioxaarsolane ring were discussed.2.The structure of the complete cyclic ethylene glycol ester of arsenous acid was refined.3.Signs of different stress of the dioxaphospholane and dioxaarsolane rings were noted.
      
Dimerization of the cyclic ethylene acetal of crotonaldehyde
      
Pretreatment for 6 h with low concentrations of 1-MCP (1-Methylcyclopropene, formerly designated as SIS-X), a cyclic ethylene analog, inhibits the normal wilting response of cut carnations exposed continuously to 0.4 μl·l-1 ethylene.
      


A study of the application of cyclic ethylene urea-formaldehyde resin finish on cotton and viscose rayon fabrics has been made. The effect of variations in kinds and concentrations of catalysts, resin concentrations, curing-temperature and-time on the wrinkle recovery and tensile strength is given. Leboratory prepared cyclic ethylene urea was used in these experiments.

根据国內的需要和已有的資料,我們对环亞乙基尿素——甲醛树脂在棉布及人造棉织物上的应用,进行了初步的研究。本文中报告了关于催化剂种类和用量、树脂濃度、焙烘溫度和时間的变化对織物的防皺性及强力的影响。在各項研究中均系采用实驗室制备的环亞乙基尿素。

A new model for determining energy level and coefficients of πMO of cyclic ethylene series is presented in this paper.The equations of the trigonometric function given in this model are more convenient than traditional method for calculations of energy level and coefficients.

本文提出了一个确定轮烯的πMO能级和系数的新方法,归纳出三角函数表达式,计算起来非常方便。

With P 2O 5 as catalytic agent and homogeneous design in carrying on the experiment, the reaction conditions for the preparation of cyclic ethylene from dehydration of cyclic ethyl alcohol are studied and optimized, and the most optimal reaction conditions are as follows: catalytic agent: 3.5 g, reaction time: 30 min, reaction temperature: 155℃~160℃.

以P2 O5为催化剂 ,用均匀设计来安排试验 ,对环已醇脱水制备环已烯的反应条件进行研究 ,并进行优化组合 ,得出反应的最佳条件为 :催化剂 3.5g ,反应时间 30min ,反应温度段为 15 5~16 0℃。

 
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