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wuyuyu2007铜虫 (小有名气)
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[求助]
请教英文好的大侠三句英文句子的语法，看看小妹写的是否正确
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第1句：However, because the emission spectra of these phosphors absences in the red region, so YAG: Ce based white LED has a poor color rendering index (CRI). 网友修正：However, these phosphors lack the red region in their emission spectra of , therefore YAG: Ce based white LED has a poor color rendering index (CRI). 楼主疑问：是不是of 应该移到lack 后面：However, these phosphors lack of the red region in their emission spectra , therefore YAG: Ce based white LED has a poor color rendering index (CRI). 第2句： It can be seen clearly that the enhancement of Ce3+ co-doped SrSiON:Eu2+ is about 140% compared with the one without Ce3+ co-doped. 应该写明具体是什么增加了，折中表达法很不合理 楼主疑问：改成这样可以么：It can be seen clearly that the luminescent properties of SrSiON:Eu2+ ,Ce3+ phosphor are enhanced about 140% compared with the one without Ce3+ co-doped. 第3句：Therefore, the electric dipole-dipole interaction predominates in the ET mechanism is from Ce3+ to Eu2+ in SrSiON: Eu2+,Ce3+. 这句话很难看懂，句子结构不合理 楼主疑问：改成这样可以么，Hence, the energy transfer from Ce3+ to Eu2+ ions is predominantly attributed to the electric dipole-dipole interaction. |
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youmomaoyan
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wuyuyu2007: 金币+1, ★★★很有帮助, 非常感谢啊，看来英文果然~哎，那句强度增加的话，不知道变了多少回了，还是不对~ 2012-09-22 09:10:23
wuyuyu2007: 金币+1, ★★★很有帮助, 非常感谢啊，看来英文果然~哎，那句强度增加的话，不知道变了多少回了，还是不对~ 2012-09-22 09:10:23
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你看看这样OK不.... 第一句：However, YAG: Ce based white LEDs with low color-rendering index (CRI) because of the lack of red light component . 第二句:你还是没有说明增强的140%是什么。发光性能不能说增强140%。你可以说是发射强度，或是什么，他得是一个值。比如说：It is obvious that emission intensity of the SrSiON:Eu2+phosphors are enhanced about 140% by co-doped with Ce3+. 第三句：The energy transfer from Ce3+to Eu2+in the host lattice of SrSiNO is quite common，and has been observed in aluminum oxynitride phosphor， which is generally attributed to the electric dipole-dipole interaction. |
3楼2012-09-21 16:12:15
youmomaoyan
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2楼2012-09-21 15:45:57
cencera
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4楼2012-09-22 07:36:36
