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各位大侠们行行好帮帮忙吧~~~小妹感激不尽啊！！！ 英译汉（2段） 1. A chiral zinc borate Zn2(OH)BO3, which exhibits nonlinear optical, photoluminescent and photoelectronic properties, has been successfully prepared through a hydrothermal reaction. The structure of the compound has a ZnO matrix and the electronic structure of the compound can be regarded as that for ZnO modified by the presence of B atoms. The luminescence properties of Zn2(OH)BO3 were characterized by excitation and emission spectra. Photovoltage signals were observed for the as-synthesized compound and for samples calcined at various temperatures by surface photovoltage spectroscopy (SPS) and field-induced surface photovoltage spectroscopy (FISPS). The results show that Zn2(OH)BO3 has photoelectric transformation ability. Either thermal treatment or application of an external electric field enhances the photovoltage responses of the compound to a considerable extent. 2 A highly intense green-emitting phosphor BaY2Si2Al2O2N5 : Eu2+ (BYN : Eu2+) peaking at 511 nm was synthesized by a solid state reaction. The structure refinement, luminescence properties of BYN : Eu2+ phosphors as well as their thermal quenching and the fabrication of white-light-emitting diodes (W-LEDs) were firstly investigated. By partially substituting Ba by Sr, namely (Ba,Sr) Y2Si2Al2O2N5 : Eu2+ (BSYN : Eu2+), the emission peak was shifted to 565 nm, giving a yelloworange color, due to the splitting of the 5d energy level. By utilizing a mixture of blue-emitting BaMgAl10O17 : Eu2+, green-emitting BYN : Eu2+ and red-emitting CaAlSiN3 : Eu2+ phosphors as light converters, an intense white GaN-based n-UV-LED (380 nm) was fabricated to a exhibit good color-rendering index Ra of 84.5 at a correlated color temperature of 5089 K and CIE coordinates of (0.3425, 0.3478). Based on these results, we are currently evaluating the potential application of BYN : Eu2+ as a green-emitting near-UV convertible phosphor. 汉译英（2段） 1. 合成了高效发射UV 光的CaSiO3 : Pr3 + 新型荧光体,研究了室温下Pr3 + 的4 f 5 d 态的发射和激发光谱, Pr3 + 的4 f 5 d 态的最低子能级向4 f 2 组态的3 H4 ,3 H6 和1 G4 能级跃迁产生UV 发射,并不伴随有4 f--4 f 能级跃迁的可见光发射。Pr3 + 的浓度猝灭是由于辐射和无辐射能量传递造成的,同时,在CaSiO3 中,存在Pr3 +→Gd3 + 的能量传递,探讨了其能量传递特性。 2. 用固相法制备化合物CaY1 - xBO4∶xEu , 研究Eu3 +在CaYBO4 中的取代格位和发光特性。当Eu3 + 掺杂浓度不大时, 存在两个发光中心,认为是取代基质中有两个Y格位的结果; 通过对Eu-O 的电荷迁移激发带位置的分析, 表明Eu3 + 所处八面体中心格位的对称性越低, Eu-O的电荷迁移带越偏向于短波; 当Eu3 + 的掺杂浓度较大( x > 0110) 时, Eu3 + 离子也可占据Ca2 + 格位, 同时Eu3 +还原成Eu2 + 。 谁能给提供一篇关于环境类的专业论文格式的英文科技论文，800字左右（期末考试用PS：本人在职研究生，英语又烂，实在是没办法啦~跪求啊！！！！！） [ Last edited by guoyujiao on 2012-12-30 at 11:36 ] |
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爱与雨下: 金币+3 2012-12-31 20:25:10
guoyujiao: 金币+20, 翻译EPI+1, ★★★★★最佳答案, 十分感谢，新年快乐~！ 2013-01-01 21:11:26
爱与雨下: 金币+3 2012-12-31 20:25:10
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【第一段】 ————A chiral zinc borate Zn2(OH)BO3, which exhibits nonlinear optical, photoluminescent and photoelectronic properties, has been successfully prepared through a hydrothermal reaction. 翻译： 手性的碱式硼酸锌具有非线性光学、荧光和光电特性，可以成功地通过水热作用的反应制备得到。# ————The structure of the compound has a ZnO matrix and the electronic structure of the compound can be regarded as that for ZnO modified by the presence of B atoms. 翻译：化合物的结构中有一个氧化锌基并且化合物的电子 结构式可以视为氧化锌是因为硼原子的存在而改变的。# ————The luminescence properties of Zn2(OH)BO3 were characterized by excitation and emission spectra. 翻译：碱式硼酸锌盐的发光性能的特征在于其激发和发射光谱。# ————Photovoltage signals were observed for the as-synthesized compound and for samples calcined at various temperatures by surface photovoltage spectroscopy (SPS) and field-induced surface photovoltage spectroscopy (FISPS). 翻译：观察到所合成的化合物的光电压和在不同温度下煅烧的样品表面光电压（SPS）和场诱导表面光电压谱（FISPS） ————The results show that Zn2(OH)BO3 has photoelectric transformation ability. 翻译：（研究的)结果表明，碱式硼酸锌拥有光电转换的能力。# ———— Either thermal treatment or application of an external electric field enhances the photovoltage responses of the compound to a considerable extent. 翻译：热处理或者施加永久性外电场都可以在相当大的程度上增强化合物的响应光电压。# 【第二段】 ————A highly intense green-emitting phosphor BaY2Si2Al2O2N5 : Eu2+ (BYN : Eu2+) peaking at 511 nm was synthesized by a solid state reaction. 翻译：可以通过固态反应合成 发出高强度绿色光的荧光体“铕参杂钇硅铝氧氮”，它的峰的最高值出现在511纳米处， The structure refinement, luminescence properties of BYN : Eu2+ phosphors as well as their thermal quenching and the fabrication of white-light-emitting diodes (W-LEDs) were firstly investigated. 翻译：首先研究了BYN：Eu2+磷光体精细化的结构，发光性能以及他们的热淬火和白色发光二极管的制造 By partially substituting Ba by Sr, namely (Ba,Sr) Y2Si2Al2O2N5 : Eu2+ (BSYN : Eu2+), the emission peak was shifted to 565 nm, giving a yelloworange color, due to the splitting of the 5d energy level. 翻译：通过部分地用锶代替钡，也就是（Ba，Sr）Y2Si2Al2O2N5：Eu2+（BSYN：Eu2+），由于5d轨道能级的分裂能，发射峰会移动到565纳米处，并显示出橘黄色。 By utilizing a mixture of blue-emitting BaMgAl10O17 : Eu2+, green-emitting BYN : Eu2+ and red-emitting CaAlSiN3 : Eu2+ phosphors as light converters, an intense white GaN-based n-UV-LED (380 nm) was fabricated to a exhibit good color-rendering index Ra of 84.5 at a correlated color temperature of 5089 K and CIE coordinates of (0.3425, 0.3478). 翻译：通过使用发蓝色的BaMgAl10O17：Eu2+,发绿色光的BYN:Eu2+和发红色光的CaAlSiN3：Eu2+磷光质的混合物作为光转换工具，并装备了很强的白色GaN基的近紫外发光二极管，以提供良好的显色指数半径在84.5， 相关色温度为5089开尔文，CIE坐标为 (0.3425, 0.3478). Based on these results, we are currently evaluating the potential application of BYN : Eu2+ as a green-emitting near-UV convertible phosphor. 翻译：基于这些结果，我们现在评估BYN：Eu2+作为发绿色光的近紫外可转换荧光体的潜在应用价值。 【第三段】 合成了高效发射UV 光的CaSiO3 : Pr3 + 新型荧光体,研究了室温下Pr3 + 的4 f 5 d 态的发射和激发光谱, Pr3 + 的4 f 5 d 态的最低子能级向【4 f 2 组态的3 H4 ,3 H6 和1 G4 】能级跃迁产生UV 发射,并不伴随有4 f--4 f 能级跃迁的可见光发射。 翻译： Novel Fluorescent CaSiO3 : Pr3 + ，which gives high efficient ultraviolet-emitting was synthesised .and research was given on the emission and excitation spectra of 4f5d energy level of Pr3+ at roomtemperature，transition of lowest sublevels of the 4 f 5 d states of Pr3 + to energy levels of 3 H4, 3 H6 and 1 G4 of 4 f 2states will produce UV emission, and was not accompanied by a visible light in transition of 4 f - 4 f energy level . Pr3 + 的浓度猝灭是由于辐射和无辐射能量传递造成的,同时,在CaSiO3 中,存在Pr3 +→Gd3 + 的能量传递,探讨了其能量传递特性。 翻译：The concentration quenching of Pr3+was due to the radiation ，nonradiative energy transfer，together with the presence of the energy transfer from Pr3 +→Gd3 +ion in the CaSiO3 and the energy transfer characteristics was investigated. 【第四段】 用固相法制备化合物CaY1 - xBO4∶xEu , 研究Eu3 +在CaYBO4 中的取代格位和发光特性。 翻译：Compound CaY1 - xBO4∶xEu was prepared by the solid phase method，the site substitution and the luminescence propertities was researched. 当Eu3 + 掺杂浓度不大时, 存在两个发光中心,认为是取代基质中有两个Y格位的结果; 通过对Eu-O 的电荷迁移激发带位置的分析, 表明Eu3 + 所处八面体中心格位的对称性越低, Eu-O的电荷迁移带越偏向于短波; 当Eu3 + 的掺杂浓度较大( x > 0110) 时, Eu3 + 离子也可占据Ca2 + 格位, 同时Eu3 +还原成Eu2 + 。 When the doping congcentration of Eu 3+was not high, the existence of two luminesecence center can be regarded as the result of two Y sites in the substitution matrix;through the analysis of the position of the excitation band of charge transfer of Eu-O,it indicated that the lower the symmetrysity of the central site of octahedron ,the higher the inlination to shortwave the charge transfer band ; when the doping concentration of Eu3+was high (above 110),Eu 3+will occupy the Ca2+site ,in the meanwhile Eu3+reduced to Eu2+. 欢迎提出修改建议  |
2楼2012-12-31 18:00:08
