醚的例句（醚在句子中的用法）

• The mass fraction of n - butene in mixed C 4 from catalytic cracking after etherized was approximately 40 %. 醚化后的催化裂化混合C4中含有质量分数约为40%的正丁烯,是生产丙烯的优质原料.
• Curing shrinkage, temperature and curing enthalpy of benzoxazine based on diphenyl oxide resin were investigated. 研究了苯并口恶嗪二苯醚树脂固化时的体积收缩率 、 固化温度和固化焓变等.
• Pay attention to fire prevention when recirculating and eluting with petroleum benzin. 用石油醚回流洗脱时应注意防火.
• And a high molecular weight poly ( arylene ether nitrile sulfone ) has obtained. 获得了高分子量的 聚芳醚 腈砜.
• P - methoxybenzeneacetonitrile was prepared in 34.8 % yield starting from anisole, via chloromethylation, cyanogenation and fractional distillation. 以苯甲醚为原料,经过氯甲基化, 氰化反应后, 通过精馏获得对甲氧基苯乙腈,总收率为34.8%.
• The alkylation of anisole with tert - butanol in hexane solution was investigated by using molybdenum pentachloride. 研究了五氯化钼参与的苯甲醚和叔丁醇在正己烷溶剂中的烷基化反应,结果显示出很高的对位选择性.
• In the presence of ethanonitrile and glycol, anisole reacts with ammonium ceric nitrate to form o - nitroanisole. 在乙腈、聚乙二醇存在下, 用苯甲醚与硝酸铈铵反应合成了邻硝基苯甲醚.
• With the compounding of polyether glycol and triol, the foam sealant can get good allround properties. 聚醚二醇和聚醚三醇复配使用, 可制得综合性能良好的单组分聚氨酯泡沫胶体系.
• In this paper , two unsaturated alicyclic nitrogen heterocyclic crownethers were synthesized by phase transfer reaction. 采用相转移催化反应合成了两个不饱和脂环氮杂冠醚.
• This activator is acyl amine - the hafnium activator that ether is a foundation. 该催化剂为酰胺 - 醚为基础的铪催化剂.
• The hydroxyl groups can be changed into esters , ethers , acetals and ketals, etc. 最常用的羟基保护基可归纳为三类:酯类 、 醚类和缩醛或缩酮类.
• ...a sweetish smell of ether and iodine. 乙醚和碘酒的香甜气味