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   特征吸收波长 的翻译结果: 查询用时:0.163秒
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特征吸收波长
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  characteristic absorption wavelength
     The results showed that ultraviolet absorption spectrums of DNA combined with NaF of different levels changed obviously. The characteristic absorption wavelength of the mixture F calf DNA and λDNA changed from 202nm to 197nm and 220nm respectively, the displacements were 5nm and 18nm respectively with the decrease of absorption intensity.
     结果发现与不同浓度NaF结合的DNA紫外吸收光谱均发生明显变化:小牛胸腺DNA及λDNA的特征吸收波长分别位移5nm及18nm,并伴有明显吸收强度的降低;
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  “特征吸收波长”译为未确定词的双语例句
     The chromatography conditions of HPLC were found: the mobile phase was methanol mingled with water (V_(methanol):V_(water)=30 : 70) ; the flow rate was 1.2mL/min; 238nm was the thiamine detection wavelength and the column temperature was 35 ℃.
     维生素B_1检测手段:在维生素B_1的最大特征吸收波长238nm下,用HPLC法测定提取液中维生素B_1的含量,确定色谱条件为:λ=238nm,流动相为甲醇和水(V_(甲醇)∶V_水=30∶70),流速1.2mL/min,柱温35℃。
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     The results showed that the characteristic peak is 275.8 nm,and the emission peak appear at 316.3 and 623.6 nm with excitation wavelength of 279.0 nm in pH 7.45 buffer solution,However,when pH>10,the UV absorption spectrum and fluorescence spectrum of dopamine change with pH changing.
     结果表明,多巴胺在生理条件下,激发光谱的波长为279.0 nm,其荧光发射波长为316.3 nm和623.6 nm,特征吸收波长为275.8 nm,pH>10时多巴胺生成其它物质.
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     Its molecular structure has been identified with IR, MS, ~1H-NMR, ~(13)C-NMR and elemental analysis and the Uvλm of DAFF and the two intermediates is obtained.
     利用IR,MS,~1H-NMR,~(13)C-NMR和元素分析对其分子结构进行了鉴定,给出了DAFF及其两种中间体的紫外特征吸收波长
     Concentrated phosphoric acid was used for the preparation of tested solutions as a solvent. The specific wavelengths of U6+ and U4+ ions were selected at 310 nm and 544 nm, respectively.
     以浓磷酸为溶剂,U~(6+)和U~(4+)离子的特征吸收波长分别确定在310nm和544nm。
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     The c phycocyanin had maxima absorption at wavelength of 278, 360 and 620nm, respectively.
     藻蓝蛋白的紫外、可见吸收光谱表明其最大特征吸收波长为278,360,620nm。
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     Gas cell method is used to determine the characteristic absorption peaks of each gas.
     采用气体池分析方法确定了常规监测气体的特征吸收波长
     UV absorption peak of the test solution was determined at 357nm.
     确定了鞣花酸的紫外特征吸收峰的测定波长为357 nm;
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     It was discovered that the wavelength of maximum absorbance showed aggreement,when P.ternata from different origin were analysed by UV-spectrometry.
     本文还测定了不同产地的半夏,其紫外光谱的特征吸收波长基本一致。
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     A LED is used as light source and its wavelength range covers gas characteristic absorption wavelength.
     根据被测气体的特征吸收对应的波长选择发光二极管作为光源.
短句来源
     Results:The diagnostic absorb wavelengh was (494±1)nm and the reagent did not dusturb.
     结果 :波长 (4 94± 1)nm为马来酸氯苯那敏特征吸收 ,试剂无干扰。
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For a study on the forked conjugative system and its relation with the corresponding linear conjugative series,in this paper three type with 11 compounds of forked conjugative azachalcone homlogs. (2P0nB,4P0nB,2QonB) have been synthesized, of which the starred ones are new compounds.The I. R. specrra of these compounds have been determined.The experimental results show that some particular group absorption wave numbers (e · g · carbonyl, ethyl) conform well to the rule of homologous linearity, with correlation...

For a study on the forked conjugative system and its relation with the corresponding linear conjugative series,in this paper three type with 11 compounds of forked conjugative azachalcone homlogs. (2P0nB,4P0nB,2QonB) have been synthesized, of which the starred ones are new compounds.The I. R. specrra of these compounds have been determined.The experimental results show that some particular group absorption wave numbers (e · g · carbonyl, ethyl) conform well to the rule of homologous linearity, with correlation cofficients ranging from 0.982 to 1.000.The reason for this is probably that the molecular vibration energies of the homologous compounds also conform approximately to the rule of homologous linearity.when the homologous lines for the group's characteristic absoption wave numbers of the forked systems are compared with those of the corresponding linear homologs, it has been found that the former locate lower than the latter, and with a smaller slope. this shows that the introduction of an electron-attractive pyridyl or quinolyl as a branching group causes a red shift in the charecteristic absoption wave length.This fact lends support to the conclusion that the moleclar integrity is the main trend in the forked systems, and the forking group's effect is under the restraint of it.

本文合成并研究了2P_0nB、4P_0nB、2Q_0nB等11个三岔共轭化合物的红外光谱。实验表明这些化合物的基因特征吸收波数近似地遵守同系线性规律,相关系数r为0.982-1.000,与相应线性体系的同系直线比较,它们的斜率较小。这表明一个分岔的引入导致基因特征吸收波长红移,并表明在三岔体系中是分子整体性占优势而分岔基团的特性是受到分子整体性制约的。

Forty green tea samples were scanned by NIR light.A stepwise multiplelinear regression analysis of the second derivative spectra of green tea selectedfour wavelengthes in the order of 2088,1684,2042 and 2046.The calibrationequation is as follows:C(T-N%)=3.302+1.721d_2OD(2088nm/1684nm)+0.905d_2OD(2042nm/2046nm).The standard deviation of difference(s)is0.0723,and the correlation coefficient(r)is 0.9964.The above equation wasverified with 27 green tea samples.The high relationship between the totalnitrogen contents...

Forty green tea samples were scanned by NIR light.A stepwise multiplelinear regression analysis of the second derivative spectra of green tea selectedfour wavelengthes in the order of 2088,1684,2042 and 2046.The calibrationequation is as follows:C(T-N%)=3.302+1.721d_2OD(2088nm/1684nm)+0.905d_2OD(2042nm/2046nm).The standard deviation of difference(s)is0.0723,and the correlation coefficient(r)is 0.9964.The above equation wasverified with 27 green tea samples.The high relationship between the totalnitrogen contents from chemical analysis and NIR analysis was obtained,andthe correlation coefficient and the standard deviation of difference are 0.993and 0.0808 respectively.T test showed that the difference between the dataobtained from NIR and chemical method was not obvious.It is concludedthat NIR method can be used to analyze the total nitrogen content in greentea.

通过对40个绿茶样品进行近红外光扫描和多元回归分析处理,求得总氮的近红外特征吸收波长为2088毫微米,计算绿茶的总氮量的多元回归方程式为 C_((T-N%))=3.302+1.721d~2OD(2088毫微米/1684毫微米)+0.905d~2OD(2042毫微米/2046毫微米),标准偏差 S=0.0723,相关系数 r=0.9964。径用27个茶样验证,r=0.993,S=0.0808,并经 t 检验,近红外法和化学法测定结果差异不显著。因此,确认近红外测定绿茶的总氮量的分析方法,可以用于绿茶的品质检验。

The near-infrared reflectance(NIR) spectra of forty green tea samples were determined. The characteristic bands associated with the four quality contents, total nitrogen, free amino acids, coffeine, and tea polyphenols of green tea, were found, multiple linear regression analysis was done, and corresponding regression equation was established. The equations were verified with 31 green tea samples. The correlation coefficient(r) and the standard deviation of difference(s) are r=0. 993, s=0. 0808 for total nitrogen,...

The near-infrared reflectance(NIR) spectra of forty green tea samples were determined. The characteristic bands associated with the four quality contents, total nitrogen, free amino acids, coffeine, and tea polyphenols of green tea, were found, multiple linear regression analysis was done, and corresponding regression equation was established. The equations were verified with 31 green tea samples. The correlation coefficient(r) and the standard deviation of difference(s) are r=0. 993, s=0. 0808 for total nitrogen, r=0. 888, s=0. 228 for free amino acids, r=0. 917, s=1. 29 for coffeine, r=0. 998 s=0. 146 for tea polyphenols. T test showed that the results both chemical analysis and NIR analysis are in good agreement. It is concluded that NIR method can be used to determine the total nitrogen, free amino acids, coffeine and tea polyphenols in green tea.

通过对40个绿茶试样进行近红外光扫描和多元回归分析处理,求得绿茶的总氮量、游离氨基酸、咖啡碱、茶多酚等四种品质成分的近红外特征吸收波长,并建立计算多元回归方程式。选用31个未知茶样,用标准化学法来验证近红外法,其相关系数(r)和标准偏差(s),总氮量(r=0.993,s=0.0808),游离氨基酸(r=0.888,s=0.228)、咖啡碱(r=0.917,s=1.29),茶多酚(r=0.998,s=0.146)。并经t检验,近红外法和化学法测定结果差异不显著。因此,确认近红外光谱法可用于绿茶的品质检验。

 
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