查询词典 butane

Stuart Abramson, MD, a pediatric immunologist at Texas Children''s Hospital, also in Houston, says that cigarette smoke contains about 4,000 chemicals and a sizable number of carcinogens and contaminants, including benzene, butane and hydrogen cyanide.

斯图尔特阿布拉姆森，医学博士，儿科免疫学家在得克萨斯州儿童医院，也是在休斯顿说，香烟烟雾中含有约4000种化学物质和相当多的致癌物质和污染物，包括苯，丁烷和氰化氢。

The adsorption/diffusion of n-butane or isobutane in ZSM-5 and Y zeolites were measured by chromatography.

采用气相色谱法研究了正丁烷和异丁烷在ZSM-5分子筛和Y分子筛上的扩散性能。

Products obtained include ethane; liquefied petroleum gases (propane, butanes, propane-butane mixtures, ethane-propane mixtures); isopentane; and other small quantities of finished products, such as motor gasoline, special naphthas, jet fuel, kerosene, and distillate fuel oil.

为什么是平台期呢？石油生产被一系列的条件（经济衰退，石油需求的下降）所约束，其还被政治事件所约束，如战争和革命。

Among the substances in third-hand smoke are hydrogen cyanide, used in chemical weapons; butane, which is used in lighter fluid; toluene, found in paint thinners; arsenic; lead; carbon monoxide; and even polonium-210, the highly radioactive carcinogen that was used to murder former Russian spy Alexander V.

三手烟中的物资包括用于制造化学武器的氢氰化物，轻质石油的丁烷，涂料稀释剂中的甲苯，砷，铅，一氧化碳，甚至还有谋杀了前苏联间谍亚历山大利维尼柯的极具放射性致癌物资钋210，三手烟中11种组成物质都是高致癌物资。

The first four members of the series (methane, ethane, propane, butane) are gases at ordinary temperatures; the next eleven are liquids, and form the main constituents of paraffin oil; the higher members are solids.

最前的四个烷烃化合物(甲烷、乙烷、丙烷、丁烷)在常温下为气体；接下来的十一个为液体，是构成石蜡油的主要物质；更高碳数的则为固体。

The synthesis path of 2-phosphono-butane-1,2,4-tricarboxylic acid is studied by using alkyl phosphate,butendioic acid dialklesters and methyl acrylate with the catalyst of sodium methylate.

论文摘要本文以亚磷酸二甲酯，顺丁烯二酸二甲酯，丙烯酸甲酯为原料，甲醇钠为催化剂，合成了 2-膦酸丁烷-1，2，4-三羧酸并对中间物及产物进行了 IR、13C，31P 核磁，MS 表征。

Under low temperature, n-butane isomerization on SO_4~2-/ZrO_2 and Cs_xH_(3-x)PW_(12)O_(40) catalyst proceeds through a monomolecular pathway in the initial stage of the reaction.

利用原位固体核磁共振技术可定量分析的优点，详细研究了上述三种酸催化剂上的正丁烷异构化反应动力学。

From this perspective, flammable ice can be regarded as the natural gas in the highest purity, and you know, the general state of the natural gas, methane is only about 92% less, in addition to about 3% of the ethane, about 2% of the nitrogen and about 1% of the propane, as well as a very small amount of butane, pentane and oxygen and so on.

从这个角度说，可燃冰可算是自然中纯度最高的天然气了，要知道，一般状态下的天然气中，甲烷大约只占92%不到，此外还有3%左右的乙烷、2%左右的氮气和1%左右的丙烷，以及极少量的丁烷、戊烷和氧气等。

Light oil, ferrocene, EPA light hydrocarbon, dimethyl ether, xylene, acetone, hydroquinone, potassium permanganate, petroleum ether, naphtha, thiol, butane, sodium hydroxide , synthesis gas reactor

轻质油，二茂铁，轻烃碳五，二甲醚，二甲苯，丙酮，对苯二酚，高锰酸钾，石油醚，石脑油，硫醇，丁烷，氢氧化钠，合成液化气反应罐

The molecular dynamics techniques were used to simulate the diffusion of 1-butene and n-butane in purely siliceous ITQ-1 zeolite.

应用分子动力学方法研究了1-丁烯和正丁烷在MCM-22型分子筛(ITQ-1)中的扩散行为。

The circulation, consumption and reproduction of the trilogy have not only testified to its historical significance and literariness, but also invested it with new meanings.

该三部曲的流通、消费与再生产不仅验证了其历史意义及文学性，而切还赋予它以新的意义。

If he thought that he could buy me off, he would be wrong.

如果他认为他可以收买我，那他就大错特错了。