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transfer band
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  迁移带
     (4) Irradiation-induced change of charge transfer band (CTB) in nanocrystalline cubic Y2O3:Eu3+was studied.
     4.研究了紫外光辐照引起的Y_2O_3:Eu~(3+)纳米晶的电荷迁移带(CTB)的变化。
短句来源
     With UV 250~320nm excitation of the charge transfer band a visible 0.55μm luminescence has been observed.
     用紫外250~320nm电荷迁移带激发,可观察到可见区~0.55μm的发光。
短句来源
     Monitored the strongest ~5D_0→~7F_2 emission line (610 nm), they all have a broad and strong excitation band which centered at about 246 nm which is ascribed to the charge transfer band (CTB) of Eu~(3+)-O~(2-) and result in that the phosphor can be excitated efficiently by low-pressure mercury lamp.
     监测其最强的5D0→7F2发射线,其激发光谱在250 nm左右有一个宽的激发带,归属于Eu-O电荷迁移带,适于用254 nm汞线激发; 在300~450 nm有一些弱的归属于Eu3+的f-f跃迁的锐吸收峰;
短句来源
     It can be concluded that charge transfer band in nanocrystalline Y2O3: Eu3+ has no direct connection with size, but depends on crystallinity.
     得出Y_2O_3:Eu~(3+)电荷迁移带近似与尺寸无关而与结晶性直接相关的重要结论。
短句来源
     Spectroscopy of rare earth ions including the 4f 4f transitions, 4f 5d transitions, 4f 6s transitions, host absorption and charge transfer band in the energy range higher than 50000 cm -1 was reported.
     讨论了稀土离子在能量高于 5 0 0 0 0cm- 1 (波长短于 2 0 0nm)的光谱 ,包括 4f 4f跃迁 ,4f 5d跃迁 ,4f 6s跃迁 ,基质吸收和电荷迁移带
短句来源
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  “transfer band”译为未确定词的双语例句
     the charge transfer band was from 280 nm to 380 nm,the peak value was 319 nm,the 399 nm and 472 nm peaks belonged to the f-f transfers in 4 f 6 configurations of Eu3+ ions.
     而位于399 nm和472 nm的线状光谱则属于Eu3+的4 f组态内部电子之间的跃迁。
短句来源
     IBM-PC microcomputer has been employed in connection with spectrophotometer in order to obtain the oscillator strength of various absorptionbands, The results showed that (1) the charge transfer band followed the order: λ_(FeT(p—CH_3)PPCl)>λ_(FeTPPCl)>λ_(FeT(p—Cl)PPCl);
     研究了取代基效应及溶剂效应。 结果表明,电荷转移(CT)带波长顺序为_(FeT(p-CH_2)PPCl)>λ_(FeTPPCl)>λ_(FeT(p-Cl)PPCl);
短句来源
     [3] The excitation spectrum of Y_2O_3:Eu shows an unusual strong excitation peak at 226nm except for the charge transfer band at around 240nm, which might be
     在pH6.0-7.5范围内沉淀,经800℃煅烧制备出平面尺度在0.6到1.5μm,厚度为50nm左右的Y_2O_3:Eu纳米片。 而分解由氢氧化钇转化而来的草酸钇铵复盐可以得到边
短句来源
     At the longer wavelength beyond the absorption edge of CaS host, there is a supplementary absorption band. It varies with the Sm~(3+) concentration. This supplementary absorption band may be ascribed to a charge transfer band from sulfur to samarium.
     在CaS基质吸收边的低能量方向观察到一个吸收带,认为它可能是电子从S~(2-)到Sm~(3+)的电荷转移带。
短句来源
     The scan of spectra in the process of reaction between MoO2(S2CNEt2)2 and PPh3 provided to confirm that the longest wavelength peak may be attributable to charge transfer band of Mo = O bond.
     实验发现,最强谱带的最大吸收波长倒数1/λ与(n~2-1)/(2n~2+1)存在较好线性关系,对于最长波的谱带,本实验结合动态的可见、紫外扫描谱和动力学实验结果,认为它是属于Mo=O键的电子跃迁谱带。
短句来源
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  相似匹配句对
     The wave band match in radioative heat transfer
     辐射换热的波长匹配问题
短句来源
     It can satisfy the requirement of base band data transfer.
     可以满足基带数据传输的要求。
短句来源
     EECHNOLOGY TRANSFER
     山东省高新技术转移中心项目推荐
短句来源
     On Pragmatic Transfer
     语用迁移性之探讨
短句来源
     Band of Brothers
     兄弟连
短句来源
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  transfer band
With increasing Fe2O3 concentration, the absorption coefficient is increased in the measured wavelength range, and the absorption edge by the charge transfer band is shifted to a longer wavelength.
      
On the other hand, with decreasing basicity of [CaO]/[SiO2], the absorption coefficient is increased in the near-infrared region, and the absorption edge by the charge transfer band is shifted to a shorter wavelength.
      
Under excitation, predominantly high-symmetry LC (D3h) are manifested in the charge-transfer band in the luminescence spectra.
      
The position of the charge-transfer band RuII → L in the spectra depends on the donor-acceptor characteristics of the ligand L.
      
Irradiation at the charge-transfer band (λ ≈ 365 nm) of complexes between diamines and CBr4 results in the formation of dyes, which absorb at 550 to 700 nm and presumably have di- and triphenylmethane structures.
      
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The absorption, fluorescence and excitation spectra of titanium-contained fluoro-phosphate glass have been measured. The results show that Ti3+ ions in the glass are located at disordered octahedral sites. With UV 250~320nm excitation of the charge transfer band a visible 0.55μm luminescence has been observed. The band-width is 180nm. In the excitation spectrum the peak position is located at 290 nm. Furthermore, time-resolved fluorescence and relaxation spectra of Ti3+ ions in the glass have been...

The absorption, fluorescence and excitation spectra of titanium-contained fluoro-phosphate glass have been measured. The results show that Ti3+ ions in the glass are located at disordered octahedral sites. With UV 250~320nm excitation of the charge transfer band a visible 0.55μm luminescence has been observed. The band-width is 180nm. In the excitation spectrum the peak position is located at 290 nm. Furthermore, time-resolved fluorescence and relaxation spectra of Ti3+ ions in the glass have been measured at room temperature and 77K, respectively. It is found that the fluorescent peak positions move from 510nm to longer wavelength 640 nm at liquid nitrogen temperature and the spectra become diffused with the increase of delay time up to 30μs, while a little change occurs in the spectra at room temperature.

对掺钛氟磷酸盐玻璃作了吸收光谱,荧光光谱和激发光谱的测定。该玻璃中,Ti~(3+)离了处于畸变八面体格位中。用紫外250~320nm电荷迁移带激发,可观察到可见区~0.55μm的发光。带宽~180nm,激发光谱的峰值位于290nm。同时分别测定了室温和77K时Ti~(3+)的时间分辨荧光光谱及弛豫光谱。随着延迟时间增加,低温下荧光峰值从510nm向长波方向移动到640nm。光谱显得弥散。而室温下变化较小。低温下荧光寿命为5~12μs,与发射波长有关。相反,室温下荧光寿命均为13μs,与发射波长无关。本文还对无机玻璃中Ti~(3+)的发光条件和可能性作了讨论。

Intramolecular metalation of N. N-dimethyl-aminomethyl ferrocene with palladium chloride gives compound III, from which the complexes IV and V can be prepared. In each case, oxidation of the iron center gives an Feu(II)- Pd(II) compound which exhibits an intervalent transfer band (IT-Band ). The band energy is dependent on the ligand L in IV and V.

FcCH2N(CH3)2Pd-X-L是一类含有不同金属离子的混合价化合物.本文介绍合成方法并讨论不同性质的配位基以及配位基在分子中的键合情况对化合物Fe(Ⅱ)氧化电势的影响,剖析Fe(Ⅱ)-Pd(Ⅱ)价电子互换作用的条件和影响的因素.

In this paper, a new sulfurizing flux method for preparing CaS:Sm~(3+) is developed and the cathodo-and photo-luminescence properties of thus produced CaS:Sm~(3+) are discussed。The mixture for producing CaS: Sm~(3+) was fired in CS_2 atmosphere formed by reaction of sulfur with activated carbon. The mole ratio of CaCO_9: Na_2CO_3: S in the mixture was 1:1:3. The products were washed with water to remove residual flux. The phosphor consists of well-crystallized, dispersed particles and the surface of the particles...

In this paper, a new sulfurizing flux method for preparing CaS:Sm~(3+) is developed and the cathodo-and photo-luminescence properties of thus produced CaS:Sm~(3+) are discussed。The mixture for producing CaS: Sm~(3+) was fired in CS_2 atmosphere formed by reaction of sulfur with activated carbon. The mole ratio of CaCO_9: Na_2CO_3: S in the mixture was 1:1:3. The products were washed with water to remove residual flux. The phosphor consists of well-crystallized, dispersed particles and the surface of the particles is smooth and it is relatively stable toward water.In the emission spectrum of CaS: Sm~(3+) phosphor excited by cathode ray, there are three groups of emission lines corresponding to the transitions ~4G_(5/2)-~6H_(9/2)(650 nm), ~4G_(5/2)-~6H_(7/2)(605nm) and ~4G_(5/2)-~6H_(5/2)(570nm)respectively. The emission color of CaS: Sm~(3+) is orange-yellow with chromaticity x=0.553, y=0.423. The optimum concentration of Sm~(3+) in CaS:Sm~(3+) is about 5×10~(-4) mol, The energy effccicncy of luminescence comparing with standard Zn_2SiO_4: Mn~(2+) is about 12%.The relative intensities of emission lines in CaS: Sm~(3+) spectrum under 254nm excitation is similar to that under CR excitation. At the longer wavelength beyond the absorption edge of CaS host, there is a supplementary absorption band. It varies with the Sm~(3+) concentration. This supplementary absorption band may be ascribed to a charge transfer band from sulfur to samarium.

采用硫化助熔剂法制备了CaS∶Sm~(3+)荧光材料。它具有好的结晶性能,颗粒表面光滑且不结团;有较好的抗水解能力。在阴极射线激发下,其色坐标值为:x=0.563;y=0.423。Sm~(3+)离子的最佳浓度是3×10~(-4)mol,能量效率约为12%。可作为新型琥珀色终端显示器用荧光材料。在CaS基质吸收边的低能量方向观察到一个吸收带,认为它可能是电子从S~(2-)到Sm~(3+)的电荷转移带。

 
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