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振动吸收峰
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  vibration absorption peak
     The vibration absorption peak of the C-O bond of PBMA at 1 158 cm-1 apparently moved toward low frequency region in the FTIR spectra.
     FTIR谱图中PBMA在1158 cm~(-1)处的酯基碳氧单键振动吸收峰向低频方向移动。
短句来源
     An infrared generator in the hot- filament CVD chamber was designed with the main wavelength 3.5μ m, which was right situated in the stretch vibration absorption peak of the C- H bond in methane molecule and H- H bond in hydrogen molecule.
     在传统热丝 CVD腔中设置一套红外线发 生器,中心波长 3.5μ m,处于氢与甲烷分子拉伸振动吸收峰位置。
短句来源
     The 2 971 cm~(-1) is the antisymmetrical stretch vibration absorption peak of CH_3. The 1 788 cm~(-1) is the stretch vibration absorption peak of CO.
     1788cm-1吸收峰为CO伸缩振动吸收峰
短句来源
     The 3 422 cm~(-1) is the stretch vibration absorption peak of O—H. The 1 634 cm~(-1) confirms that there are H_2O in the nano-diamond.
     2971cm-1是CH3的反对称伸缩振动吸收峰,说明样品中存在极少量的碳氢化合物;
短句来源
  “振动吸收峰”译为未确定词的双语例句
     The v_(Ba-F), v_(Ms-F) and v_(Al-F) vibrations occur at 480-510cm~(-1), 530-550cm~(-1)and 580cm~(-1) respectively in Raman spectra.
     在拉曼光谱中,V_(Ba)-F、V_(Mg)-F和V_(Al)-F振动吸收峰分别出现在480—510cm~(-1)、530—550cm~(-1)和580cm~(-1)处。
短句来源
     Infrared spectroscopic analysis of enamels from different age groups revealed that the ratio of relative intensity between the absorption peak of vibration u_3,u_2 of CO_3~(2-) and the absorption peak of vibration v_3 of PO_4~(3-) increases in parallel with the advancement of ages.
     通过不同年龄组的釉质标本的红外光谱的分析发现CO_3~2的U_3,U_2振动吸收峰与PO_4~(3-)的U_3振动吸收峰的相对强度的比值随年龄增大而逐渐增大。
短句来源
     The results show that the OH-vibration absorption peak of the 6%Mg:0.1%Ce:0.08%Fe:LN crystal purple shifts to the 3 532 cm-1 position; its photo-damage threshold is over two orders of magnitude higher than that of the Ce:Fe:LN crystal.
     结果表明:6%Mg:0.1%Ce:0.08%Fe:LN晶体的OH-振动吸收峰紫移到3532cm-1,其光损伤阈值比Ce:Fe:LN晶体提高2个数量级以上。
短句来源
     There was 1730~1650 cm~(-1) band in the IR spectra of β -CD·BH, and the position and intensity of β -CD·BH was changed in compartion to BH.
     结果显示:β-CD·BH的IR谱在1730~1650cm-1出现伸缩振动吸收峰,峰的位置和强度较BH有改变。
短句来源
     The compound was characterized by IR spectrum(the strong characteristical absorption of -C=N appears at 1651cm~(-1) and that of pyridine ring appears at 1588cm~(-1),1462cm~(-1),768cm~(-1)).
     产品进行了红外光谱分析(1 651 cm-1出现-C=N的强特征吸收峰,1588 cm-1,1 462 cm-1出现吡啶环的骨架振动吸收峰,768 cm-1出现吡啶环的γ=C-H弯曲振动的强吸收峰)。
短句来源
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     In addition,there also exist C=C vibra tion peak as the result of the de-hydrogen chloride reaction.
     C振动
短句来源
     The 2 971 cm~(-1) is the antisymmetrical stretch vibration absorption peak of CH_3. The 1 788 cm~(-1) is the stretch vibration absorption peak of CO.
     1788cm-1吸收为CO伸缩振动吸收
短句来源
     At the same time,the atom ratio of silicon to nitride increases in film and the peak of Si-N is near to characteristic peak.
     红外吸收谱的S i-N键的振动向标准逼近。
短句来源
     there existed apparent absorption peaks of hydrocarbon in the IR;
     高岭石胡敏酸复合体的红外光谱出现了明显的C-H振动吸收
短句来源
     The FTIR bands at 2 930 and 2 857 cm~(-1) are the antisymmetrical and symmetrical stretch vibration absorption spectra of CH_2 respectively.
     2930和2857cm-1是CH2的反对称和对称伸缩振动吸收;
短句来源
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  vibration absorption peak
Relevance of these results in the study of temperature dependence of the width of the fundamental lattice vibration absorption peak in the ionic crystals is pointed out.
      


In the present work,the adsorption of CD_3OD on HZSM-5 beforeand after modification has been studied by IR and also its adsorptionmodel and adsorption mechanism are suggested.Methoxyl radical isdetected when CD_3OD adsorbed on HZSM-5 or on Al modified HZSM-5is evacuated for 20 min at 180—200℃.When the sample is evacuated at300℃ for 20 min,methoxyl radical will desorb from the surface andthe absorption bands on B-acid sites reappear.However,the HZSM-5modified by Mg exhibits differently.If we evacuate the system...

In the present work,the adsorption of CD_3OD on HZSM-5 beforeand after modification has been studied by IR and also its adsorptionmodel and adsorption mechanism are suggested.Methoxyl radical isdetected when CD_3OD adsorbed on HZSM-5 or on Al modified HZSM-5is evacuated for 20 min at 180—200℃.When the sample is evacuated at300℃ for 20 min,methoxyl radical will desorb from the surface andthe absorption bands on B-acid sites reappear.However,the HZSM-5modified by Mg exhibits differently.If we evacuate the system afterCD_3OD adsorption at different temperature,no methoxyl is detected butabsorption bands of C—D appears at 2000—2300 cm~(-1)with different in-tensity.These may be due to the CD_3OD or CD_3OCD_3 molecules absorbedon the strong L-acid sites.

本文用红外光谱法考察了CD_3OD 在改性前后的HZSM-5催化剂上的吸附作用,提出了其吸附态模型及吸附机理。发现当CD_3OD 吸附在HZSM-5与Al 改性的HZSM-5(简称AlHZSM-5)后,于180—200℃下抽空20分钟,均有甲氧基生成,而在300℃左右抽空20分钟,则甲氧基脱除,B 酸中心的吸收峰再现。在Mg 改性的HZSM-5催化剂(简称Mg HZSM-5)上则大不相同,所吸附的CD_3OD 在各种温度下脱附时均未发现有甲氧基生成;在200—550℃范围内,这些催化剂的红外谱图上在2000—2300cm~(-1)区间还出现强弱不等的CD 伸缩振动吸收峰,这可能是由于吸附在强的L 酸中心上的CD_3OD 或CD_3OCD_3引起的。

With a Nicolet 7199B Fourier transform infrared spectrometer and the nujol mull technique, the mid-infrared spectra in the region of 600~3600cm~(-1) have been observed for triethylene glycol phthalate (phthalyl-14-c-4), 15-crown-5 (15-C-5), 18-crown-6 (18-C-6) and sym-dibenzo-24-crown-8 (dibenzo-24-c-8), and also their LiClO_4 complexes: LiClO_4·phthalyl-14-c-4, LiClO_4·l5-c-5·H_2O, 2LiClO_4·18-c-6-2THF·3H_2O and 2LiClO_4·dibenzo-24-c-8·3H_2O. Spectroscopic assignments have been made for ten different modes...

With a Nicolet 7199B Fourier transform infrared spectrometer and the nujol mull technique, the mid-infrared spectra in the region of 600~3600cm~(-1) have been observed for triethylene glycol phthalate (phthalyl-14-c-4), 15-crown-5 (15-C-5), 18-crown-6 (18-C-6) and sym-dibenzo-24-crown-8 (dibenzo-24-c-8), and also their LiClO_4 complexes: LiClO_4·phthalyl-14-c-4, LiClO_4·l5-c-5·H_2O, 2LiClO_4·18-c-6-2THF·3H_2O and 2LiClO_4·dibenzo-24-c-8·3H_2O. Spectroscopic assignments have been made for ten different modes of vibrations (Table 1). The infrared shifts due to complex formation are interpreted as regards the location of water molecules, the coordination of Li~+ and ClO_4~- ions, frequency regions of C—O—C and C—C—O groups, splitting of the C—O peak, and the small displacement pertaining to the benzo-group. Besides, the isotopic shift of the H_2O band due to ~6Li and ~7Li amounts to about 8 cm~(-1).

测定了冠-4、冠-5、冠-6、冠-8等四种冠醚与高氯酸锂配位前后的中红外吸收光谱,观察到十种振动吸收峰在配位之后发生了变化.从水分子的配位状态、配位水吸收峰的锂同位素位移、冠醚骨架振动的变化、C=O吸收峰的分裂、苯环吸收峰的位移和Li~+与ClO_4~-的配位等方面对配合物的结构进行了分析和讨论.

The FT-IR spectra and subtraction spectra of fifteen rare earth naphthenates in the extract phase have been studied with the following results; (1) The symmetrical stretching vibration band(vs) of the carboxylate ion in the extracted rare earth naphthenates can not be found in the used FT-IR spectra, but we have found them in the subtraction spectra. (2) Then the differences between vas (asymmetrical frequency of COO-) and vs, i.e., △v = vas -vs, can be obtained from which the coordination structure of the rare...

The FT-IR spectra and subtraction spectra of fifteen rare earth naphthenates in the extract phase have been studied with the following results; (1) The symmetrical stretching vibration band(vs) of the carboxylate ion in the extracted rare earth naphthenates can not be found in the used FT-IR spectra, but we have found them in the subtraction spectra. (2) Then the differences between vas (asymmetrical frequency of COO-) and vs, i.e., △v = vas -vs, can be obtained from which the coordination structure of the rare earth naphthenates may be discussed. (3) By this way, the effect of coordination of the secondary octyl alcohol (ROH) with the rare earth naphthenates was observed. The effect of coordination of cations with ROH diminishes considerably according to the following order. Re3+>Na+>H+ (in naphthenic acid).

研究了十五种稀土萃取有机相的FT-IR和减差光谱,得到了以下新结果: 1.找到了稀土萃合物的羧基对称伸缩振动吸收峰v_s,同时测定了稀土萃合物的羧基反对称伸缩振动吸收峰v_(as)。 2.计算稀土萃合物的Δv(v_(as)-v_s)值,讨论了萃取有机相中稀土离子的配位结构。 3.观察到萃取有机相中仲辛醇与稀土离子的配位效应,得到仲辛醇的配位能力顺序为:R_E~(3+)>Na~+>环烷酸中H~+。

 
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