This phenomenon does not occur with 1 - 2 - dimethylenecyclobutane.

在1,2--二亚甲基环丁烷中并不发生这种现象.

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Cyclobutane exists predominantly in a " butterfly " conformation.

环丁烷主要成 “ 蝶式 ” 构象存在.

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The main component in 4 # solvent is liquefied butane.

四 号 溶剂主要成分为液化丁烷.

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Butane and butylenes has the same characteristic with propane and propylene.

丁烯与丁烷表现出与丙烯、丙烷相似的特性.

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The butane conversion of catalyst aged in different pH has similar value.

在不同pH值老化的催化剂先驱体,经活化后对丁烷的转化率基本相同.

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Butane is found into both oil and natural gas.

丁烷气体是从石油和天然气中找到的.

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Di - Grignard Reagent and mono Grignard Reagent were prepared using 1, 4 - dibromobutane.

以1, 4- 二溴丁烷为原料,分别制备了双格氏试剂和单格氏试剂.

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The studies in the catalysts for dehydroisomerization of n - butane are reviewed.

综述了正丁烷一 步脱 氢异构催化剂的研究现状.

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Its main components include propane, butane and butylene.

主要成份是丙烷 、 丁烷、丁烯等.

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Tetrahydrothiophene was synthesized using iodine as a catalyst from 1, 4 - dichlorobutane and sodium sulfide.

以1, 4- 二氯丁烷和硫化钠为原料,碘为催化剂,乙醇为溶剂合成了四氢噻吩.

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Butanes and butenes can be maintained in the liquid states ambient temperature under quite moderate pressure.

在适当的大气压力及常温下,丁烷和丁烯均可保持液体状态.

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Other are less common, can include ethane, propane, butane and light and heavy naphtha.

其它不常用的原材料包括乙烷 、 丙烷 、 丁烷以及轻、重石脑油.

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The heptanal butyl mercaptan was synthesized with heptanal, sodium thiosulfate and 1 bromobutane as raw materials.

以正庚醛 、 硫代硫酸钠和溴代正丁烷为原料,合成了正庚醛正丁硫醇缩醛.

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The polyhedral flame has been observed when butane burns in some laminar conditions.

在丁烷层流预混气体的燃烧过程中清晰地观察到多棱火焰现象.

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Methods: The compound was synthesize by steps of reduction, condensation and cyclic condensation from 1, 2 - dicyanocyclobutane.

方法以1, 2- 二氰基环丁烷为原料,经还原 、 缩合、环合三步反应得到洛铂.

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