prepatation

常见例句

• The prepatation of 2,4-di-tert-butylphenol by alkylating with phenol and isobutene as materials,catalyst is well activity,conversion of phenol is more 90%,total yield of alkylation is 90%.
  采用苯酚、异丁烯为原料,烷基化反应生产2,4-酚,所用自制催化剂具有很高的活性,苯酚转化率大于990%25,烷基酚收率可达90%25。
• This paper dealed with the prepatation of plasticizer by mixing the 810 ester with DOP in different ration which is used in the production of soft PVC granule for automobiles sealant strip.
  研究了将 810酯和DOP按各种比例混合作主增塑剂 ,用于制作汽车密封条用PVC软质粒料 ;试验了810酯用量比对材料硬度、拉伸强度、断裂伸长率、回弹性、热失重、熔体流动速率的影响。
• Prepatation and Uses of Load Fluid QY for Gas Well Control
  QY气井压井液的研制与应用
• Prepatation of Magnesium Hydroxide and Adsorption Performance of Dark-Green Dyestuff to Magnesium Hydroxide
  氢氧化镁的制备及对直接墨绿染料的吸附性能研究
• Study on the Prepatation of Chitosan Oligomers with Peroxide Degradation and Analysis Molecular Weight and Polydispersity
  过氧化氢制备壳低聚糖及分子量和其分布的研究
• Study of the Prepatation of the Field Ionization Gas Sensor Based on the One Dimension Materials and Its Gas Sensitivity
  一维纳米材料的场致电离传感器的研制及其气敏特性研究
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