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天然气不含硫, 含甲烷88-99%, 乙烷6%和丙烷3%.The gas , which is sulphur - free , contains 89 - 99 % methane, up to 6 % ethane, and 3 % propane.某些苯代 ( 或多苯 ) 环氧乙烷是制取带苯环 ( 或二苯 ) 碳烯的极好原料.Phenyl ( or polyphenyl ) substituted epoxides serve a...
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聚羟基乙酸的经典制备方法主要有两种:直接缩合聚合法和乙交酯开环聚合法.There are two means available for the preparation of PGA - synthesis polymerization and ring - opening polymerization....
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非离子型表面活性剂有聚氧乙烯缩合物糖酯和烷基胺氧化物.Nonionics include polyoxyethylene condensates, sucrose esters and alkyl amine oxides.非离子型表面活性剂有聚氧乙烯缩合物, 糖酯和烷基胺氧化物.Nonionic surface - active agents include polyoxyethylene condensates, sucrose e...
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“乙川”的英语可以翻译为：ethenyl，ethylidyne ...
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“苯乙醚”的英语可以翻译为：[化] ethoxybenzene，ethyl phenolate，phenetole ...
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“乙妥英”的英语可以翻译为：[医] ethotoin，peganone ...
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“乙腈”的拼音为：...
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同时,利用紫外分光光度法中的标准曲线法,测出二氯乙二肟的含量.The content of dichloroglyoxime was determined with standard curve method in ultraviolet spectrophotometry....
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主要观察指标: 大鼠脑海马组织胆碱乙酰基转移酶活力的测定.MAIN OUTCOME MEASURES: Determination of the choline acetyltransferase activity in the groups.此外, 还介绍了乙酰基丁二酸二甲酯的应用.Finally , the application of DMAS was also presented.HDAC可以从很多蛋白质中去除一种叫做乙酰基的化...
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“乙醛酸”的英语可以翻译为：[化] glyoxalic acid，glyoxylic acid，[医] ethanal acid，oxoacetic acid ...
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“次乙基”的英语可以翻译为：[化] acet，ethylidyne，[医] aethylenum，ethene ...
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“乙硫磷”的英语可以翻译为：[化] diethion，ethion，Nia 1240 ...
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“乙拌磷”的英语可以翻译为：[化] disolfoton，disulfoton，Dysiston ...
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“二乙胺”的英语可以翻译为：[有化] diethylamine ...
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“乙醛胺”的英语可以翻译为：[化] aldamine ...
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“乙酰”的英语可以翻译为：acetophenetidin，phenacetin，acetyl ...
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“乙醛”的拼音为：...
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“乙胺嗪”的英语可以翻译为：[化] diethylcarbamazine ...
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“溴乙烷”的英语可以翻译为：omoethane，ethyl bromide ...
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“乙醛酰”的英语可以翻译为：glyoxyl ...
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“乙交酯”的英语可以翻译为：[化] diglycolideglycollide ...
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“聚乙醛”的英语可以翻译为：metacetaldehyde ...
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“二乙胺”的拼音为：èr yǐ àn...
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这些作用可用加入维生素e和有效的抗氧剂, 如乙氧喹啉,来加以克服.These effects can be overcome by addition of Vitamin E and effective antioxidant, such as ethoxyquin....
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'氰'.''基一种单价基因,''.'氯'. ''化苯乙酮, 存在于简单的和复杂的氰化物中.A univalent radical , CN, found in simple and complex cyanide compounds.降低反应温度,提高了苯乙酮的收率.Thus , this reduced temperature of r...
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“双乙嗪”的英语可以翻译为：[医]diethazine ...
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“二乙硫”的英语可以翻译为：[有化] diethyl sulfide，ethyl sulfide，ethylthioethane ...
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“乙萘”的英语可以翻译为：ethylnaphthalene ...
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“乙酰解”的拼音为：...
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“乙醇腈”的英语可以翻译为：[化] glycollic nitrile，glycolonitrile ...