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辛烷     
相关语句
  octane
     octane(6.12%);
     辛烷(6.12%);
短句来源
     Synthesis, Crystal Structure and Absolute Configuration of (+)-1R,3R,5S-1,8,8-Trimethyl-3-Methylthio-3-Oxo-2,4,3-diaza-Phosphabicyclo[3,2,1] Octane
     (+)-1R,3R,5S-1,8,8-三甲基-3-甲硫基-3-氧代-2,4,3-二氮磷杂二环[3,2,1]辛烷的合成、晶体结构和分子的绝对构型
短句来源
     Synthesis, Crystal Structure and Absolute Configuration of (+)-1R, 3R,5S-1,8,8-Trimethyl-3-Thio-3-(4-Methyl-Phenyloxo)-2,4,3-Diaza-Phosphabicyclo[3,2,1] Octane
     (+)-1R,3R,5S-1,8,8-三甲基-3-硫代-3-(4-甲基苯氧基)-2,4,3-二氮磷杂二环[3,2,1]辛烷的合成和分子绝对构型
短句来源
     NMR STUDY OF 1,2,4,6 - TETRAPHENYL- 2- HYDROXYL -8-AZABICYCLO [3,2,1] OCTANE
     1,2,4,6—四苯基—2—羟基—8—氮杂双环[3、2、1]辛烷的核磁共振研究
短句来源
     Synthesis of the 4-Acryloxymethy1-2, 6, 7-Trioxiabicyclo (2.2.2) Octane
     4-羟甲基-2,6,7-三氧杂二环(2.2.2)辛烷的合成
短句来源
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  octane numbers
     Methanol has rather high clear and blending octane numbers and can be used as a high octane blending component in blends for motor gasoline.
     甲醇具有较高的净辛烷值和较高的调合辛烷值,在与烃类汽油调合时,是一种起高辛烷值汽油调合组分作用的含氧化合物。
短句来源
     The accuracy of the instrument developed upon this method is ±1.5 octane numbers in the range of 70 to 98.
     采用该方法研制的测量仪器,在70~97辛烷值范围之间,测量准确度达到±1.5个辛烷值。
短句来源
     When the method was applied to determine the octane numbers of fluid catalytic cracking gasoline samples, the deviation of results was about 0.5 unit compared with the standard method.
     与采用标准方法测定催化裂化汽油辛烷值的结果相比,该方法测定辛烷值的偏差约0 5个单位。
短句来源
     The iso-paraffins of C4-C8 are the hydrocarbons with high octane numbers, which are used as fuels for internal-combustion engines and fuel batteries.
     G_4-G_8的异构烷烃是具有高辛烷值碳氢化合物,主要作为内燃机和燃料电池的燃料使用。
短句来源
     The in- creased octane numbers of various fractions have been compared,and it turned out that the C_5~C_6 light FCC gasoline is the best feedstock for etherification. By etherification, the RON of FCC gasoline:is increased by 1.8~3.0 units.
     比较了各馏分提高辛烷值的效果得出了 C_3~C_6馏分是临氢醚化反应最佳原料的结论,经过临氢醚化反应,催化裂化汽油的研究法辛烷值可提高1.8~3.0单位。
短句来源
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  octanes
     Synthesis of 1,8-Bis(2-Methyl-1,3,4-Oxdiazole)Octanes
     1,8-二(2-甲基-1,3,4-噁二唑)辛烷的合成
短句来源
     Synthesis and Nitrolysis of Substituted 2,4,6,8-Tetraazabicyclo[3.3.0]octanes
     取代2,4,6,8-四氮杂双环[3.3.0]辛烷的合成及硝解
短句来源
     Synthesis of 3-Substituted Tricyclo[3.2.1.0~(3,8)]octanes
     3-位取代的三环[3.2.1.0~(3,6)]辛烷衍生物的合成
短句来源
     Two substituted 2,4,6,8 tetraazabicyclo[3.3.0] octanes have been synthesized from the condensation of formaldehyde, glyoxal, benzylamine and the addition between glyoxal and N,N′ methylenebisacetamide.
     利用苄胺、甲醛、乙二醛的缩合反应以及亚甲基二乙酰胺与乙二醛之间的亲核加成反应合成了两取代的 2 ,4,6 ,8-四氮杂双环[3.3.0 ]辛烷
短句来源
     Then with mol_(N,N’-diacelysebacic acid dihydiazide) :mol_(Phosphoryl chride)=1:10(mol:mol),Phosphoryl chride 5mL,V_(Phosphoryl) chride :mol_(Acetonitrile)=1:5,reflux Four hours,hydrolysis seventy-two hours . 1,8-Bis(2-Methyl-1,3,4-Oxdiazole)Octanes was synthesized and the yield was 82%.
     再在N,N’-二乙酰基癸二酰二肼与三氯氧磷的摩尔比为1:10,三氯氧磷5mL,POCl3与CH3CN的体积比为1:8,在此条件下反应4h,水解72h,得到1,8-二(2-甲基-1,3,4-口恶二唑)辛烷,产率为82%.
短句来源
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  octanesulfonate
     Methods:Using a column packed with C_ 18 (250×4.6mm)and kept 35℃. Methanol-5mmol potassium dihydrogen phosphate solution(contain 10mmol sodium octanesulfonate,adjusted to pH 3.0 with 1.5mol/L phosphoric acid)(55∶45)as mobile phase,detected at 215nm.
     方法采用phenomenexC18柱(250×4.6mm),柱温35℃,甲醇-5mmol磷酸二氢钾溶液(含10mmol辛烷磺酸钠,用1.5mol/L的磷酸溶液调pH至3.0)(55∶45)为流动相,检测波长为215nm。
短句来源
     A Kromasil C18 column(4.6mm × 150mm) was used with the mobile phase of methanol-water-phosphate buffer solution (pH 3.0)(55:42:3, containing 6.0 mmol/L sodium octanesulfonate). The flow rate was 0.8ml/min, at detection wavelength of 274 nm.
     色谱柱为Kromasil C_(18),流动相为甲醇-水-磷酸盐缓冲液(pH3.0)(55:42:3,含6.0 mmol/L辛烷磺酸钠),流速0.8ml/min,检测波长274 nm。
短句来源
     Methods: ZORBAX ODS(4.6 mm × 150 mm,5 μm) column was applied. The mobile phase was acetonitrile-20 mmol/L potassium dihydrogen phosphate buffer(containing 2.0 mmol/L octanesulfonate sodium,pH 2.5)(28:72,(v/v).)
     方法:采用ZORBAX ODS色谱柱(4.6 mm×150 mm,5μm),双波长紫外检测器,以乙腈∶20 mmol/L的磷酸二氢钾缓冲液(含2.0 mmol/L的辛烷磺酸钠,pH2.5)=28∶72为流动相;
短句来源
     Methods:A Dikma Discovery ODS column(4.6 mm×250 mm,5 μm) and a mobile phase composed of water(which contained 1.36 g sodium octanesulfonate,1.0 g sodium chloride,1 mL phosphoric acid in 580 mL)-methanol-acetonitrile(5.8∶4.2∶1.08) were used.
     方法:色谱柱为Dikma公司ODS柱(4.6 mm×250 mm,5μm); 流动相为水(每580 mL含辛烷磺酸钠1.36 g、氯化钠1.0 g、磷酸1mL)∶甲醇∶乙腈(5.8∶4.2∶1.08);
短句来源
     An accurate method for the determination of terbutaline sulphate in the Bricanyl tablets was established, using Shim pack VP ODS column (150×4.7 mm,5 μm) with the mobile phase of 0.005 mol/L sodium 1 octanesulfonate solution (pH adjusted to 3.4 with acetic acid) acetonitrile (77∶23), at the detection wavelength of 280 nm.
     建立了博利康尼片中硫酸特布他林含量的 HPL C测定法。 色谱柱为 Shim - pack VP- ODS(15 0× 4.7m m ,5μm ) ,0 .0 0 5 mol/ L辛烷磺酸钠 (用醋酸调节 p H值至 3.4) -乙腈 (77∶ 2 3)为流动相 ,检测波长为 2 80 nm。
短句来源
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  octane
Reaction feed was prepared by dissolving dibenzothiophene (DBT), which was selected as a model organosulfur compound in diesel fuels, in n-octane.
      
The higher the initial concentration of DBT in the n-octane solution, the more difficult the deep desulfurization by oxidation is.
      
The olefins (olefins with C atom number above 4) content of FCC gasoline was markedly reduced, and the aromatics content and octane number were increased.
      
It was demonstrated that the cells also displayed respiratory activity towards other medium-chainn-alkanes: hexane, octane, decane, tridecane, and heptadecane.
      
Properties of the membrane and soluble forms of somatic angiotensin-converting enzyme (ACE) were studied in the system of hydrated reversed micelles of aerosol OT (AOT) in octane.
      
更多          
  octane numbers
Fuel characteristics have been determined for a number of ester-gasoline blends with promising results for lowering Reid vapor pressure and raising octane numbers.
      
Prediction of FCC gasoline octane numbers using FT-MIR and PLS
      
A method for predicting "octane numbers" (RON and MON) in fluid catalytic cracking (FCC) gasolines is proposed.
      
The derived bond-additive molecular P'/P index, which correlates well with the octane numbers in octanes, was found to be linearly related to the Wiener numbers.
      
1.It has been shown that car gasolines with an octane number equal to 95 (without additive) can be produced from catalytically reformed gasoline with octane numbers equal to 97-98 by addition of 25-30 wt.
      
更多          
  octanes
Dichloro- and dibromocyclopropanation of 2-substituted 1,3-dioxacyclohept-5-enes according to Makosza resulted in formation of the corresponding 4-substituted 8,8-dichloro(dibromo)-3,5-dioxabicyclo[5.1.0]octanes in good yields.
      
4-Alkyl-2,6,7-trioxa-1-phosphabicyclo[2.2.2]octanes in the Synthesis of Lipids
      
Spatial Structure of 4-R-3,5-Dioxabicyclo[5.1.0]octanes
      
4-R-3,5-Dioxabicyclo[5.1.0]octanes were prepared in good yields by reduction of the corresponding 8,8-dichloro derivatives in a system Li-t-BuOH.
      
Adsorption of branched octanes and linear hydrocarbons on crystalline lamellar silica surfaces has been studied by inverse gas chromatography at infinite dilution.
      
更多          
  octanesulfonate
The rare earth elements are then separated from each other on a column of bonded phase silica by gradient elution with 0.05 to 0.5 M lactic acid (pH 3.5) in the presence of 0.01 M sodium 1-octanesulfonate.
      
The ion-exchange behavior of glycolatocomplexes of the rare earths (Sc, Y and lanthanides) with 1-octanesulfonate as the hydrophobic ion has been investigated in aqueous glycolate media.
      
Thiamine was extracted from dried yeast with isobutanol containing sodium 1-octanesulfonate as an ion-pairing agent and determined by HPLC on a reversed phase ODS column with UV detection at 254 nm.
      
The method is based on the use of a C18 bonded phase column and a mobile phase composed of 10 volumes of acetonitrile and 90 volumes of an aqueous solution containing 1 g L-1 sodium octanesulfonate and 0.77 g L-1 ammonium acetate.
      
The chiral mobile phase contained the complex of Cu(II) with the optically active selector L-phenylalaninamide (L-PheA), and an ion-pair reagent, sodium 1-octanesulfonate.
      
更多          
  其他


Fifty-two hydrocarbons were found in the analysis of a fraction of Yu-Men gasoline normally boiling between 85° and 125℃. In this analysis, an analytical method for straightrun gasoline hydrocarbons composed of adsorption catalytical dehydrogenation and fractional distillation processes and Raman spectrometric examination was employed. The aromatic content of the fraction investigated was found to be 5.8% and consisting mainly of toluene. Cyclohexanes presented predominantly in naphthenes, in which 12.4% of...

Fifty-two hydrocarbons were found in the analysis of a fraction of Yu-Men gasoline normally boiling between 85° and 125℃. In this analysis, an analytical method for straightrun gasoline hydrocarbons composed of adsorption catalytical dehydrogenation and fractional distillation processes and Raman spectrometric examination was employed. The aromatic content of the fraction investigated was found to be 5.8% and consisting mainly of toluene. Cyclohexanes presented predominantly in naphthenes, in which 12.4% of methylcyclohexane and 7.6% of 1,3-dimethylcyclohexane by weight of the fraction were found; cyclopentanes identified were composed principally of di- and trimethylcyclopentanes. The contents of n-paraffins and isoparaffins were found to be about the same, the most abundant paraffin found was n-heptane, which accounted for 11.4% by weight of the fraction, and followed by n-octane, 5.5%.

用分析直餾汽油單體烴的綜合分析法分析了玉門汽油85~125℃餾分。共發現有52個單體烴。其中芳烴含量為5.8%,主要為甲苯。環烷烴中以環己烷類佔優勢,對原料油計,甲基環己烷佔12.4%,1,3-二甲基環己烷佔7.6%;環戊烷以二甲基及三甲基環戊烷為主。烷烴中的正烷烴和異構烷烴含量很相近,其中正庚烷最多,佔原料油的11.4%,正辛烷佔5.5%。

Diaminodiphenoxyalkanes (I) have been reported to be active schistosomicides, but have a toxic effect on eyes. Attempts have been made in the present work to modify their structures so as to retain the therapeutic activity, but to eliminate the side actions, and the preparation of some bis (p-aminophenoxy) thiaalkanes (II) and bis (p-aminophenoxy) dithiaalkanes (III) is now reported.Condensation of N, N-di-β-hydroxyethylaminophenol and the corresponding α, ω-dichlorothiaalkanes gave 1,5-bis (N, N-di-β-hydroxyethylaminophenoxy)-3-thiapentane...

Diaminodiphenoxyalkanes (I) have been reported to be active schistosomicides, but have a toxic effect on eyes. Attempts have been made in the present work to modify their structures so as to retain the therapeutic activity, but to eliminate the side actions, and the preparation of some bis (p-aminophenoxy) thiaalkanes (II) and bis (p-aminophenoxy) dithiaalkanes (III) is now reported.Condensation of N, N-di-β-hydroxyethylaminophenol and the corresponding α, ω-dichlorothiaalkanes gave 1,5-bis (N, N-di-β-hydroxyethylaminophenoxy)-3-thiapentane (IIa) and 1, 8-bis (N, N-di-β-hydroxyetbylaminophenoxy)-3, 6-dithia-octane (IIIa) respectively. In a similar process the corresponding α, w-bis-p-acetaminophenoxy compounds (V, VII; R=CH_3CONH) were prepared. Difficulty was encountered, however, on hydrolysis of the amide linkage in these compounds, concentrated hydrochloric acid cleaved the ethereal linkage, dilute hydrochloric acid gave only poor yield of the amino compounds, whilst sodium methoxide had n eaction, α, ω-Bis-p-benzalaminophenoxy compounds (V, VII; R=PhCH:N) were eventually synthesized, and mild hydrolysis of them gave the desired α, ω-bisaminophenoxy compounds (IIb, IIIb).p-Nitrophenoxyethyl (VI;R=NO_2, n=2) and p-acetaminophenoxyethyl mercaptans (VI; R=CH_3CONH, n=2) were condensed with methylene iodide, giving 1, 7-bis (p-nitrophenoxy)-3, 5-dithiaheptane (VIT; R=CH_3CONH, n=2, m=1)and 1, 7-bis (p-acetaminophenoxy)-3, 5-dithiaheptane (VII; R=NO_2, n=2, m=1) frespectively. The former product was obtained in extremely poor yield, and hydr olytic removal of the acetyl group from the latter product caused cleavage in. the hioacetal linkage. However, condensation of 3-p-nitrophenoxypropyl mercaptan-(VI; R=NO_2, n=3) with either methylene iodide or ethylene bromide readily aftorded the corresponding α, ω-bis (p-nitrophenoxy)-dithiaalkanes (VII; R=NO_2), which, on reduction with sodium sulphide, was converted into 1, 9-bis (p-aminophenoxy)-4, 6-dithianonane (ITId) and 1, 10-bis (p-aminophenoxy)- -dithiadecane (IIIe) respectively. The mercaptans employed are hitherto unknown compounds. They were prepared by the replacement or the addition of thiolacetic acid on aryloxyethyl bromide or 3-aryloxypropene followed by hydrolysis of the thiol acetates so formed.

对二(β-羟乙基)氨基苯酚与相应的α,ω-二氯代硫间烷缩合,形成1,5-双[对二(β-羟乙基)氦基苯氧基]-3-硫间戊烷(Ha)及1,8-双[对二(β-羟乙基)氨基苯氧基]-3,6-二硫间辛烷(IIIa)。对苯亚甲氦基苯酚同样缩合并再水解后变为1,5-双(对氨基苯氧基)-3-硫间戊烷(IIb)及1,8-双(对氨基苯氧基)-3,6-二硫间辛烷(IIIb)。3-对硝基苯氧基丙硫醇分别与二碘甲烷及溴化乙烯缩合,并将产物还原后形成1,9-双(对氨基苯氧基)-4,6-二硫间壬烷(III-d)及1,10-双(对氨基苯氧基)-4,7-二硫间癸烷(IIIe),后者并又制成其N-甲烷磺酸钠衍生物(IIIf)。

Hydrocarbons in the gasoline fraction boiling below 150℃ of Karamai crude oil are individually identified by a combined method employing fractional distillation, adsorption chromatography, catalytical dehydrogenation and Raman spectroscopy. 93% (wt.) of the total hydrocarbons in the gasoline fraction have been determined quantitatively and 74 hydrocarbons have been identified. The main constituents thus identified are: m-xylene (1.8%, by wt. based on the gasoline fraction), toluene (1.3%), n-pentane (5.6%),...

Hydrocarbons in the gasoline fraction boiling below 150℃ of Karamai crude oil are individually identified by a combined method employing fractional distillation, adsorption chromatography, catalytical dehydrogenation and Raman spectroscopy. 93% (wt.) of the total hydrocarbons in the gasoline fraction have been determined quantitatively and 74 hydrocarbons have been identified. The main constituents thus identified are: m-xylene (1.8%, by wt. based on the gasoline fraction), toluene (1.3%), n-pentane (5.6%), n-heptane (5.5%), n-octane (5.2%), 2-methylheptane (6.0%), 2-methylpentane (4.9%), 2,6-dimethylheptane (4.4%), 1,1,3-trimethylcyclohexane (7.4%), methylcyclohexane (5.2%) and methylcyclopentane (1.4%). The percentages by weight of aromatics, n-paraffins, isoparaffins, cyclohexanes and cyclopentanes in the gasoline fraction are 4.6, 23.4, 34.0, 24.0 and 7.0 respectively. The results of this combined analytical method may be satisfactorily duplicated.

用分析直餾汽油單體烴的綜合法研究了克拉瑪依原油汽油餾分(~150℃)的單體烴組成。在該餾分中共鑑定出74個單體烴,已定量分析出的烴組成佔汽油的93%(重量)。其中芳烴佔4.6%(重量,對汽油,下同),主要為間-二甲苯(1.8%)和甲苯(1.3%);烷烴佔57.4%,正烷烴和異烷烴的比為1:1.45,主要成分為正戊烷(5.6%)、正庚烷(5.5%)、正辛烷(5.2%)、2-甲基庚烷(6.0%)、2-甲基戊烷(4.9%)和2,6-二甲基庚烷(4.4%);環烷類佔31%,其中環已烷類和环戊烷類的比為3.43:1,環已烷中以1,1,3-三甲基環已烷(7.4%)和甲基環已烷(5.2%)較多,環戊烷中則以甲基環戊烷(1.4%)最多。本方法的重覆性尚令人滿意。

 
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