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wuyuyu2007

铜虫 (小有名气)

[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

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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有一种气质来自知识与学历,有一种气质来自职业,设计师万岁!
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youmomaoyan

铁杆木虫 (正式写手)

【答案】应助回帖

感谢参与,应助指数 +1
wuyuyu童鞋又看见你了
https://xt.jxust.edu.cn/info/1029/1950.htm
2楼2012-09-21 15:45:57
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youmomaoyan

铁杆木虫 (正式写手)

【答案】应助回帖


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
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.
https://xt.jxust.edu.cn/info/1029/1950.htm
3楼2012-09-21 16:12:15
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cencera

铁杆木虫 (正式写手)

complex too much!!
charles@cencera.com
4楼2012-09-22 07:36:36
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