alkanes

美 ['ælke?nz] 　英 ['ælke?nz]

• n.【化】鏈烷
• 網(wǎng)絡(luò)烷烴；烷類；烷烴類

詞形變化

復(fù)數(shù)：alkanes  

英漢解釋

n.	1. 【化】鏈烷,烷(屬)烴

英英解釋

n.	1. an open-chain hydrocarbon containing only carbon-to-carbon or carbon-to-hydrogen single bonds and belonging to a series whose members all have the same general chemical formula.

例句

The result showed that among the lipid substances we extracted, most compositions which had stronger antimicrobial activities are alkanes.

結(jié)果表明，抗菌活性較強的物質(zhì)中大多是烷烴類物質(zhì)。

Chemical fossils (e. g. alkanes and porphyrins) are often the only evidence for life in rocks of PRECAMBRIAN age.

化學(xué)化石（烷烴和卟啉）是前寒武紀(jì)地層中生命存在的唯一證據(jù)。

It concluded that there is a liner relation between the physical chemical properties of alkanes and effective length of carbon chain.

研究表明，鏈烷烴的許多物理化學(xué)性質(zhì)與有效碳鏈長度成線性關(guān)系。

Synthesizing very long alkanes is not trivial, especially in the quantities and purities required to put these simulations to the test.

合成很長的烷烴并不輕松，尤其是達到實驗所需要的數(shù)量和純度。

And Virent, based in Madison, Wisconsin, is making alkanes out of sugars using a chemical, rather than a biological, process.

威斯康辛州麥迪遜的Virent正通過一種化學(xué)、而不是生物的過程從糖中提取直鏈烷烴。

Its chemical properties are similar to those of alkanes, but its molecule is in the form of closed ring.

其化學(xué)性質(zhì)與烷烴相似，但其分子是閉環(huán)形式。

The general uses of alkanes may be divided into three categories.

烷的一般用途可分為三個方面。

The distribution pattern of the carbon isotopic compositions of the individual n-alkanes shows almost no change during this process.

同時也證明了生排烴過程不影響正構(gòu)烷烴單體碳同位素組成曲線的形狀；

Ethylene can also be turned into alkanes, a class of hydrocarbons that are a component of gasoline.

乙烯還可以轉(zhuǎn)變成烷烴——是石油中含有的一種碳?xì)浠衔?/c>。

They confirmed their discovery by incorporating the genes into E. coli and measuring the alkanes that the bacteria subsequently made.

他們通過將產(chǎn)烷必須的基因植入大腸桿菌并對最終產(chǎn)生的烷進行測量，驗證了他們的發(fā)現(xiàn)。

Alkanes can be chlorinated or brominated by treatment with chlorine or bromine in the presence of visible or uv light .

烷在可見光或紫外光照射下，用氯或溴處理才能氯化或溴化。

The direct oxidation of propane to acrylic acid has become a hot spot in catalytic oxidation of light alkanes in recent years.

丙烷直接氧化制丙烯酸是近年來催化氧化的熱點課題。

Conclusion The main components of the volatile oil were firstly analyzed and most of them were esters and alkanes.

結(jié)論首次對林下參的揮發(fā)性成分進行了分析，含量較高的主要是酯類和烷烴。

A lower LHSV benefited the conversion of the alkanes, but a further decrease of LHSV would reduce the selectivity of the alkenes .

較低的空速有利于十二烷的轉(zhuǎn)化，但進一步減小空速將造成十二烯的選擇性明顯降低。

The hydrocarbon oil composition is divided into alkanes, cycloalkanes, aromatics.

原油中的烴類成分主要分為烷烴、環(huán)烷烴、芳香烴。

Main components were n-alkanes, there are a small band of individual branched-chain alkanes and cycloalkanes with long side chain.

主要成分為正構(gòu)烷烴，有個別支鏈烷烴和環(huán)烷烴側(cè)鏈長的小樂隊。

The high-carbon alkanes mainly come from heavy ends sneaking in during the production or transportation process of LPG.

其中高碳烷烴主要源于在生產(chǎn)或運輸LPG過程中混入的重質(zhì)成分；

The bacteria secrete the alkanes, which can then by easily collected and used as a fuel.

改造過的細(xì)菌能分泌烷類，很容易被收集并可以用作燃料。

In this paper, n-alkanes of extractable organic matter of airborne particulate samples, exhausted gas and smog dust were examined by GC-MS.

本文用GC—MS測定了蘭州市大氣飄塵、汽車尾氣和煙塵等樣品中可溶有機質(zhì)的正構(gòu)烷烴。

Such alkanes are the main ingredients of diesel fuel.

這種烷烴是柴油的主要成分。

Organisms make alkanes via a complex process that produces fatty acids from carbon dioxide or sugars.

生物體通過一個復(fù)雜的過程，即利用二氧化碳或糖類生產(chǎn)脂肪酸的過程中產(chǎn)烷。

Alkanes are resistant to attack by oxidizing agents generally.

烷烴一般對于氧化劑的作用是穩(wěn)定的。

The alkanes are generally inert to ionic reagents.

烷烴一般說來對離子型試劑是不活潑的。

On the NFPA 704 scale, 2-methylhexane is listed as a reactivity level-0 chemical, along with various other alkanes.

在NFPA704系統(tǒng)中，2-甲基己烷與其他烷烴被列為反應(yīng)活性等級為0的化合物。

In addition, the selectivity of long-chain alkanes in air is higher than that of in ozone.

另外，在空氣氣氛下長鏈烷烴的選擇性高于在臭氧氣氛下。

In fact, most alkanes are unreactive except in extreme conditions, such as combustion or strong sunlight.

大多數(shù)烷烴并不活潑，除非在極端情況下，如燃燒和強烈陽光。

Alkanes undergo reaction such as cracking , alkylation, oxidation, halogenation , nitration and so on.

烷烴能夠發(fā)生裂解反應(yīng)、烷基化反應(yīng)、氧化反應(yīng)、鹵代反應(yīng)、消化反應(yīng)等。

Industry: Industrial gases; Alkanes and derivatives; Organic Intermediates; Chemical Additives; Chemical Instrumentation;

所屬行業(yè)：工業(yè)氣體；烷烴及衍生物；有機中間體；化工助劑；化工儀表；；

A study of correlation between the physical-chemical properties and molecular molar mass of alkanes

分子摩爾質(zhì)量與鏈烷烴物理化學(xué)性質(zhì)的相關(guān)性研究

Industry: Alkanes and derivatives; Organic Intermediates; Pharmaceutical Intermediates;

所屬行業(yè)：烷烴及衍生物；有機中間體；醫(yī)藥中間體；；

Industry: Alkanes; Halogenated hydrocarbons; Hydrofluoric acid; Common organic reagent; General inorganic reagent;

所屬行業(yè)：烷烴；鹵代烴；氫氟酸；通用有機試劑；通用無機試劑；；

Industry: Alkanes and derivatives; Olefins and derivatives; Alcohol; Carboxylic acid and derivatives; Aromatic hydrocarbons and derivatives;

所屬行業(yè)：烷烴及衍生物；烯烴及衍生物；醇類；羧酸及衍生物；芳香烴及衍生物；；

Industry: PU products; Alkanes and derivatives; Engineering Plastics; Plastics production and processing equipment; Synthetic Rubber;

所屬行業(yè)：PU產(chǎn)品；烷烴及衍生物；工程塑料；塑料生產(chǎn)加工設(shè)備；合成橡膠；；

Industry: Alkanes and derivatives; Inorganic acid; Organic Intermediates; Chemical Additives; Inorganic base; Esters;

所屬行業(yè)：烷烴及衍生物；無機酸；有機中間體；化工助劑；無機堿；酯類；；

Industry: Alkanes; Olefin; Chemical insecticide terminator; Sulfate; Sulfuric acid; General inorganic reagent;

所屬行業(yè)：烷烴；烯烴；驅(qū)蟲滅害化學(xué)品；硫酸鹽；硫酸；通用無機試劑；；

Industry: Alkanes; Carboxylic acid; Aromatic; Acyl halides; Hydrochloric acid; Common organic reagent; General inorganic reagent;

所屬行業(yè)：烷烴；羧酸；芳香烴；酰鹵；鹽酸；通用有機試劑；通用無機試劑；；

Predicting the Thermodynamic Properties for Alkanes with the Autocorrelation Topological Index of Atomic characteristic

用原子特征自相關(guān)拓?fù)?/c>指數(shù)預(yù)測鏈烷烴的熱力學(xué)性質(zhì)

Relationship between the Carbon Isotope Composition of Single Alkanes in Plants and Their Growing Environment

植物中單體烷烴碳同位素組成與其生長環(huán)境的關(guān)系

Broad-Spectrum Degradation Capability of a High-Efficiency Alkanes Degrading Bacterium Strain

烷烴高效降解菌的廣譜降解性能研究

Synthesis and NMR Study of Phenols Multi Substituted by Alkanes Containing Fluorine and Study on Their NMR Spectra

一類含氟多取代苯酚的合成及其核磁共振研究