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宽吸收峰
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  broad absorption peak
     The Ce(Ⅲ) complex was easily oxidized to a violet-red complex of Ce(Ⅳ) with pH>6, the later has a broad absorption peak at 510 nm.
     当pH>6时铈(Ⅲ)配合物能自发氧化成紫红色的铈(Ⅳ)配合物。 后者在510nm处有一宽吸收峰
短句来源
  broad absorption band
     Optical absorption spectra are measured for pure BTO and Al-doped BTO by using UV-300. At room temperature,pure BTO absorption spectrum shows a broad absorption band when photon energy is between 2.2~3.2eV,which implies an indirect band-to-band energy gap about 2.2eV below the conduction band.
     用自动分光光度计测量自己生长的光折变晶体钛酸铋(BTO)光吸收谱.结果表明,室温下纯BTO晶体的吸收谱在2.2~3.2eV之间存在一个宽吸收峰,说明在晶体的带隙内存在一个间接跃迁能级,离导带顶大约2.2eV;
短句来源
  wide absorption peak
     higher in manganese content; wide absorption peak of Mn ̄(3+) on absorption spectra. The swinefordite has characteristics of orange-red;
     与国外样品比较,该锂霞石的特征是肉红色,晶体细小,锰含量较高,光吸收谱显示Mn ̄(3+)的宽吸收峰
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  “宽吸收峰”译为未确定词的双语例句
     higher content in Al_2O_3 and lower content in MgO; absorption peak of OH on IR abeorption spec-tra is 3 634 cm ̄(-1); giving out heat peak is 928℃ on DTA curves;
     锂蒙脱石的特征是桔红色,鳞片状,Al_2O_3含量较高和MgO含量较低,红外吸收谱上OH吸收峰为3634cm ̄(-1),差热曲线上的放热峰为928℃,光吸收谱上Mn ̄(3+)的宽吸收峰强度大。
短句来源
     However, the phenolic group of the syn--ydroxy-benzophenone oxime is free from association, its v(OH) appears at 3580cm~(-1), and the olecules exist in dimer form due to intermolecular association between two oxime groups and hows broad and medium strong absorption near 3200 cm~(-1).
     顺式的邻羟基二苯甲酮肟类随着溶液的稀释,酚羟基被游离出来在3580cm产生吸收,而肟基形成分子间二聚缔合体,表现为3200cm~(-1)附近较强的宽吸收峰.
短句来源
     Under this condition Tb(Ⅲ) can be oxidized to Tb(Ⅳ) and forms a stable deep-red-coloured solution which shows a broad characteristic absorption band at 420 nm.
     三价铽可被氧化为四价,形成稳定的深红色溶液,其紫外和可见吸收光谱在波长420nm左右处有一宽吸收峰
短句来源
     Samples with main anatase and grain size in the range of 30~40 nm have a stronger absorbing peak.
     晶粒尺寸在 35~ 4 0nm之间 ,主晶相为锐钛型结构的TiO2 出现较强较宽吸收峰
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      broad absorption peak
    The cortical pigment(s) is red fluorescent with a broad absorption peak in the blue (ca.?420-480?nm), and sharp peaks in the yellow-green (ca.?550?nm) and red (600?nm).
          
    We have found that typically natural graphite grains, having axial ratios of the order of 104 to 105 and a temperature about 4 K, have a broad absorption peak only at decimetre wavelengths and thus cannot adequately thermalize the background.
          
    High absorbance, broad absorption peak with small fluorescence quantum yield, and low radiative rate make octyl methoxy cinnamate a superior UV-B sunscreen ingredient.
          
    Sols showed a broad absorption peak at 640 nm, suggesting 3-5 coordination of the aminopropyl groups to Cu2+.
          
    Incorporation of Cr ion gives rise to a broad absorption peak at 1.87 μm.
          
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      broad absorption band
    The contribution to the formation of the broad absorption band of the (R2POOH)2 dimers made by anharmonic interactions between the high-frequency ν(OH) vibration and the low-frequency intermolecular vibrations is estimated.
          
    It is the existence of amino-group and hydrogen atom that cause the amorphous structure and the deformation of bonding to increase, thus leading the Raman spectrum to form a broad absorption band.
          
    The chromophore has a rather broad absorption band, with an absorption maximum at 602 nm.
          
    It becomes evident that there exists a broad absorption band with a maximum at about 0.93 eV at 295 K.
          
    Typical results are summarized for the Stark effect on the zerophonon lines and on the broad absorption band of point defects in ionic crystals and of impurities in semiconductors.
          
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    The v(OH) region of syn-and anti-2-hydroxy-4-sec-octyl-and 2-hydroxy-3-sec-ctyloxybenzophenone oxime was observed at various concentrations in order to study their tructure. The substituted anti-2-Hydroxy-benzophenone oxime in CC1_4 shows a free absorption vOH)of oxime group at 3580cm~(-1), but the phenolic hydroxyl group chelates with the nitrogen tom of oxime by intramolecular hydrogen bond resulting in a stable six-member ring, its v (OH) hows weak multiplets overlapped on v(CH) absorptions. However, the...

    The v(OH) region of syn-and anti-2-hydroxy-4-sec-octyl-and 2-hydroxy-3-sec-ctyloxybenzophenone oxime was observed at various concentrations in order to study their tructure. The substituted anti-2-Hydroxy-benzophenone oxime in CC1_4 shows a free absorption vOH)of oxime group at 3580cm~(-1), but the phenolic hydroxyl group chelates with the nitrogen tom of oxime by intramolecular hydrogen bond resulting in a stable six-member ring, its v (OH) hows weak multiplets overlapped on v(CH) absorptions. However, the phenolic group of the syn--ydroxy-benzophenone oxime is free from association, its v(OH) appears at 3580cm~(-1), and the olecules exist in dimer form due to intermolecular association between two oxime groups and hows broad and medium strong absorption near 3200 cm~(-1). Infrared spectra of the copper omplexes of the substituted anti-hydroxbenzophenone oxime indicate that the structure of the omplexes is probably formed through the interactions of two extractant molecules with one upric ion in the stable trans form as shown in the Chinese text.

    通过取代的邻羟基二苯甲酮肟在不同浓度水平的羟基伸缩振动v_(OH)的现象来鉴别和证实其顺式或反式异构体.反式的邻羟基二苯甲酮肟类随着溶液的稀释,肟羟基被游离出来在3580cm~(-1)产生吸收,而酚羟基与肟基上的氮原子形成稳定的共轭六元环,表现为与v_(OH)重叠的多重峰.顺式的邻羟基二苯甲酮肟类随着溶液的稀释,酚羟基被游离出来在3580cm产生吸收,而肟基形成分子间二聚缔合体,表现为3200cm~(-1)附近较强的宽吸收峰.红外光谱说明反式邻羟基二苯甲酮肟类的铜络合物结构可能为二分子的螯合剂互成反式与一个铜离子结合成为一个稳定的络合物.

    Using potassium persurfate as an oxidizing agent, the formation and the properties of tetravalent terbium in alkaline aqueous solution of potassium periodate have been investigated. Under this condition Tb(Ⅲ) can be oxidized to Tb(Ⅳ) and forms a stable deep-red-coloured solution which shows a broad characteristic absorption band at 420 nm. The solution of tetravalent terbium is relatively stable in the air and the stability of its solution decreases with the decreasing of the pH value. The amount of complexing...

    Using potassium persurfate as an oxidizing agent, the formation and the properties of tetravalent terbium in alkaline aqueous solution of potassium periodate have been investigated. Under this condition Tb(Ⅲ) can be oxidized to Tb(Ⅳ) and forms a stable deep-red-coloured solution which shows a broad characteristic absorption band at 420 nm. The solution of tetravalent terbium is relatively stable in the air and the stability of its solution decreases with the decreasing of the pH value. The amount of complexing and oxidizing agents, alkalinity of the solution and anion of terbium salts have a great influence on the formation of Tb(Ⅳ) ion. The complex of Tb(Ⅳ) also can be prepared by electrolytic oxidation.

    在强碱性的高碘酸钾水溶液中,用过硫酸钾作氧化剂,对四价铽的生成条件和性质进行了研究。三价铽可被氧化为四价,形成稳定的深红色溶液,其紫外和可见吸收光谱在波长420nm左右处有一宽吸收峰。与三价铽溶液的吸收光谱的比较和对深红色溶液氧化性质的研究皆证明了四价铽的存在。四价铽溶液在空气中很稳定,但随pH值的降低而稳定性下降。络合剂和氧化剂的用量、溶液的碱度、稀土盐的阴离子等都对四价铽的形成有重要的影响。还对三价铽高碘酸根络离子的电化学氧化进行了研究。

    The coordination and auto-oxidation of cerium with tiron had been studied. A colorless complex of Ce(Ⅲ)with tiron was formed at pH>4.5, and two absorption peaks were observed at 256 nm and 311 nm in the UV spectrum. The Ce(Ⅲ) complex was easily oxidized to a violet-red complex of Ce(Ⅳ) with pH>6, the later has a broad absorption peak at 510 nm. The oxidation rate and oxidation degree increased with pH increasing and the oxidation of Ce(Ⅲ) was completed at pH>9. Adding alcohols and acetone which are mixable with...

    The coordination and auto-oxidation of cerium with tiron had been studied. A colorless complex of Ce(Ⅲ)with tiron was formed at pH>4.5, and two absorption peaks were observed at 256 nm and 311 nm in the UV spectrum. The Ce(Ⅲ) complex was easily oxidized to a violet-red complex of Ce(Ⅳ) with pH>6, the later has a broad absorption peak at 510 nm. The oxidation rate and oxidation degree increased with pH increasing and the oxidation of Ce(Ⅲ) was completed at pH>9. Adding alcohols and acetone which are mixable with water can be accelerating the formation and stabilization of Ce(Ⅳ) complex. Two series of Ce(Ⅲ) complexes ML and M(HL)_n (n=1,2,3) were formed, but only one series of Ce(Ⅳ) complexes ML_n, (n=1,2,3,4) were found. The stability constants of these complexes have been determined also.

    详细地研究了铈与钛铁试剂的配位反应及怖(Ⅲ)与铈(Ⅳ)配合物的相互转化。无色的铈(Ⅲ)配合物在pH>4.5时生成,吸收光谱中于256nm与311nm处有两个吸收峰。当pH>6时铈(Ⅲ)配合物能自发氧化成紫红色的铈(Ⅳ)配合物。后者在510nm处有一宽吸收峰。氧化程度与氧化速度随pH增大而增加;pH>9时氧化完全。加入醇或酮等与水互溶的有机溶剂能促进铈(Ⅳ)配合物的生成并使之稳定。测定了铈(Ⅲ)与铈(Ⅳ)配合物的组成及其稳定常数。这些常数多数未见文献报道。

     
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