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高分求 光學(xué)薄膜 物理 專(zhuān)業(yè)英語(yǔ)翻譯 有追加

76223344 2010-06-02 04:05:57 599  瀏覽
  • 翻譯 論文摘要 給出了部分關(guān)鍵詞 希望對(duì)你您有所幫助 也希望您對(duì)我有所幫助 呵呵 部分關(guān)鍵字: 帶通濾光片 近紅外 膜系設(shè)計(jì) 短波通 ZX波長(zhǎng) 透射率 key words :pass-band optical filter; near infrared; film system design;short wave pass;centr... 翻譯 論文摘要 給出了部分關(guān)鍵詞 希望對(duì)你您有所幫助 也希望您對(duì)我有所幫助 呵呵 部分關(guān)鍵字: 帶通濾光片 近紅外 膜系設(shè)計(jì) 短波通 ZX波長(zhǎng) 透射率 key words :pass-band optical filter; near infrared; film system design;short wave pass;central wavelength ;transmittance 翻譯正文如下: 摘要:隨著礦難的頻頻發(fā)生,瓦斯探測(cè)器的靈敏度越來(lái)越受到人們重視。 本文中的紅外吸收型甲烷檢測(cè)儀便具有選擇性強(qiáng),靈敏度高等優(yōu)點(diǎn)。其中近紅外濾光片為該裝置的核心部件。 本文介紹了利用特征矩陣法進(jìn)行薄膜設(shè)計(jì)的制作方法。 采用Si和SiO2作為薄膜材料,利用ZX波長(zhǎng)不同的長(zhǎng)波通和短波通濾光片對(duì)接,以完成近紅外波段的帶通濾光片設(shè)計(jì)。 該濾光片ZX波長(zhǎng)為1651nm,并在該波長(zhǎng)附近的透射率可達(dá)到95%。 能翻多少翻多少 一句也行呀 呵呵 google的就免了,翻得好有追加,人格擔(dān)保~~ 展開(kāi)

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  • 芊音似沫 2010-06-03 00:00:00
    試試哈,僅供參考,^_^ Abstract:With the frequently collapse of mines, the sensitivity of gas detector have being worthy of our considerations. The infrared absorbed detector for methane in this article especially, the core components of this device----Near infrared optical filters, have advantages on conspicuous selections, high sensitivity and so on. What's more, here introduce the method on film system design using the characteristic matrix method. Using Si and SiO2 as the film material, we try to finish the design of the pass-band optical filter in the near infrared band, with the docking of long wave pass and short wave pass optical filter in different central wavelength. The filter's central wavelength is 1651nm, and the transmittance close to this wavelength would reach 95%.

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  • 妞妞405972501 2010-06-03 00:00:00
    Abstract: As the frequent mine disaster , the sensitivity of gas detector has been taken more seriously. The detector intriduced here called"Infrared absorption of methane detector",which has higher selectivity and sensitivity.Near-infrared filters is the core components of the device. The very method of Film Design in the way of Characteristic matrix is introduced in the article. It use Si and SiO2 as the film material, and the use of different center wavelength of long wave pass and short wave pass filter docking to complete the near-infrared band pass filter design. The filter center wavelength is 1651nm, and in the vicinity of the wavelength of the transmission rate of up to 95%.

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  • hh15204536928 2010-06-03 00:00:00
    Summary: With the frequently occured Mining Accident, People pays more and more attentions to the sensitivity of gas detector. The infraredabsorption detector metioned in this article do have the advantage of better selectivity and higher sensitivity. The core component of it is the near-infrared filter. This article introduced how to use the method of Characteristic Matrix to devise film. Use Si and SiO2 as the meterial of film, butt jiont the Long wave pass and the short wave pass(which differs from the lenght of their central wave)to finish the design of pass-band optical filter with near-infrared band. The lenght of the central wave for the filter is 1651nm. And the transmittance can reach to 95% around this lenght area. key words :pass-band optical filter; near infrared; film system design;short wave pass;central wavelength ;transmittance

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  • 羽一好710 2010-06-03 00:00:00
    abstract: Abstract: As the high rate of accident in mine, the sensitivity of gas detector has been taken more seriously. The detector intriduced here called"Infrared absorption of methane detector",which has higher selectivity and sensitivity.Near-infrared filters is the core components of the device. The very method of Film Design in the way of Characteristic matrix is introduced in the article. It use Si and SiO2 as the film material, and the use of different center wavelength of long wave pass and short wave pass filter docking to complete the near-infrared band pass filter design. The filter center wavelength is 1651nm, and in the vicinity of the wavelength of the transmission rate of up to 95%.

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  • 彗痡衟 2010-06-04 00:00:00
    專(zhuān)業(yè)準(zhǔn)確,請(qǐng)放心。 帶通濾光片 近紅外 膜系設(shè)計(jì) 短波通 ZX波長(zhǎng) 透射率 key words :pass-band optical filter; near infrared; film system design; short wavelength pass;central wavelength;transmittance 翻譯正文如下: 摘要:隨著礦難的頻頻發(fā)生,瓦斯探測(cè)器的靈敏度越來(lái)越受到人們重視。本文中的紅外吸收型甲烷檢測(cè)儀便具有選擇性強(qiáng),靈敏度高等優(yōu)點(diǎn)。其中近紅外濾光片為該裝置的核心部件。本文介紹了利用特征矩陣法進(jìn)行薄膜設(shè)計(jì)的制作方法。采用Si和SiO2作為薄膜材料,利用ZX波長(zhǎng)不同的長(zhǎng)波通和短波通濾光片對(duì)接,以完成近紅外波段的帶通濾光片設(shè)計(jì)。 該濾光片ZX波長(zhǎng)為1651nm,并在該波長(zhǎng)附近的透射率可達(dá)到95%。 Abstract: With the frequently occurring of mine accidents the sensitivity of gas detectors is paid more and more attentions by people. The infrared absorption type methane detector presented in this paper has the features of powerful selectivity, high sensitivity, etc. In the detector the infrared filter is the core part of the device. This paper presents a fabrication method which uses Eigen Matrix method to conduct film design. The design of the band pass filter in near-infrared band is completed using Si and SiO2 as the film materials, and the butting of short- and long-wavelength pass filters which have different central wavelengths. The central wavelength of the filter is 1651nm, and transmittance around this wavelength is up to 95%.

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高分求 光學(xué)薄膜 物理 專(zhuān)業(yè)英語(yǔ)翻譯 有追加
翻譯 論文摘要 給出了部分關(guān)鍵詞 希望對(duì)你您有所幫助 也希望您對(duì)我有所幫助 呵呵 部分關(guān)鍵字: 帶通濾光片 近紅外 膜系設(shè)計(jì) 短波通 ZX波長(zhǎng) 透射率 key words :pass-band optical filter; near infrared; film system design;short wave pass;centr... 翻譯 論文摘要 給出了部分關(guān)鍵詞 希望對(duì)你您有所幫助 也希望您對(duì)我有所幫助 呵呵 部分關(guān)鍵字: 帶通濾光片 近紅外 膜系設(shè)計(jì) 短波通 ZX波長(zhǎng) 透射率 key words :pass-band optical filter; near infrared; film system design;short wave pass;central wavelength ;transmittance 翻譯正文如下: 摘要:隨著礦難的頻頻發(fā)生,瓦斯探測(cè)器的靈敏度越來(lái)越受到人們重視。 本文中的紅外吸收型甲烷檢測(cè)儀便具有選擇性強(qiáng),靈敏度高等優(yōu)點(diǎn)。其中近紅外濾光片為該裝置的核心部件。 本文介紹了利用特征矩陣法進(jìn)行薄膜設(shè)計(jì)的制作方法。 采用Si和SiO2作為薄膜材料,利用ZX波長(zhǎng)不同的長(zhǎng)波通和短波通濾光片對(duì)接,以完成近紅外波段的帶通濾光片設(shè)計(jì)。 該濾光片ZX波長(zhǎng)為1651nm,并在該波長(zhǎng)附近的透射率可達(dá)到95%。 能翻多少翻多少 一句也行呀 呵呵 google的就免了,翻得好有追加,人格擔(dān)保~~ 展開(kāi)
2010-06-02 04:05:57 599 5
求無(wú)損檢測(cè)視頻教程 射線優(yōu)先 高分求 有追加
求無(wú)損檢測(cè)視頻教程射線優(yōu)先高分求有追加考試要用急求有檢驗(yàn)員視頻教程更佳... 求無(wú)損檢測(cè)視頻教程 射線優(yōu)先 高分求 有追加 考試要用 急求 有檢驗(yàn)員視頻教程更佳 展開(kāi)
2014-05-06 07:49:22 458 2
求win7可用的西門(mén)子s7-200編程軟件,高分追加!
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2013-03-20 15:46:34 344 4
應(yīng)用化學(xué)專(zhuān)業(yè)英語(yǔ)翻譯
Herein, we present a template approach that allows for the incorporation of normally labile metal centers, such as copper(I), copper(II), and silver(I), into DNA branch points(Scheme 1 a). Remarkably high structural stability and chir-al... Herein, we present a template approach that allows for the incorporation of normally labile metal centers, such as copper(I), copper(II), and silver(I), into DNA branch points(Scheme 1 a). Remarkably high structural stability and chir-ality transfer to the metal complex are demonstrated. More-over, we have used this approach to generate the first example of a dynamic multimetallic metal–DNA assembly, with three metal complexes as the corners, single-stranded DNA as the sides, and multiple DNA double strands at the periphery (Scheme 1 d). We demonstrate quantitative and reversible structural switching of these metal–DNA nanostructures by adding specific DNA strands, resulting in controlled modu-lation of the metal–metal distances.This contribution thus allows the programmable generation of structurally dynamic multimetallic metal–DNA assemblies, with anticipated appli-cations in nanoelectronics, nanooptics, artificial photosyn-thesis, high-density data storage, and catalysis. To create stable and electroactive metal–DNA junctions,we examined the attachment of the ligand bis(2,9-diphenyl)-1,10-phenanthroline (dpp) to DNA (Scheme 1 a). This ligand has been used by the groups of Sauvage and others to generate interwoven structures.[10]It forms complexes such as [Cu(dpp)2]+, whose redox potential falls within the compat-ible window for DNA bases (+ 0.8 to-0.7V vs. saturated calomel electrode, SCE) 展開(kāi)
2013-05-02 09:56:40 546 1
化學(xué)專(zhuān)業(yè)英語(yǔ)翻譯
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2011-01-01 00:21:43 445 3
專(zhuān)業(yè)英語(yǔ)翻譯,急用
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2011-05-09 17:15:02 573 2
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2008-08-21 10:43:34 430 6
擠出機(jī)英語(yǔ)翻譯。。。在線等。高分懸賞
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2009-03-29 12:37:44 653 2
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2014-03-12 19:29:21 581 2
高分求人工翻譯 一段話 好的話再追加 在線翻譯者謝絕入內(nèi)
本文主要實(shí)現(xiàn)了基于LABVIEW的數(shù)字隨動(dòng)系統(tǒng)的網(wǎng)絡(luò)實(shí)驗(yàn)開(kāi)發(fā),在LABVIEW軟件環(huán)境下編寫(xiě)數(shù)字隨動(dòng)系統(tǒng)PID控制器的程序,運(yùn)用LABVIEW平臺(tái)的強(qiáng)大擴(kuò)展功能將此套實(shí)驗(yàn)系統(tǒng)發(fā)布到網(wǎng)絡(luò)之上,并設(shè)... 本文主要實(shí)現(xiàn)了基于LABVIEW的數(shù)字隨動(dòng)系統(tǒng)的網(wǎng)絡(luò)實(shí)驗(yàn)開(kāi)發(fā),在LABVIEW軟件環(huán)境下編寫(xiě)數(shù)字隨動(dòng)系統(tǒng)PID控制器的程序,運(yùn)用LABVIEW平臺(tái)的強(qiáng)大擴(kuò)展功能將此套實(shí)驗(yàn)系統(tǒng)發(fā)布到網(wǎng)絡(luò)之上,并設(shè)定相應(yīng)的控制使用權(quán)限和安全保護(hù)功能, 首先,本文運(yùn)用C語(yǔ)言,自動(dòng)控制原理等相關(guān)知識(shí),使用圖形化編輯語(yǔ)言G語(yǔ)言在LABVIEW平臺(tái)上編寫(xiě)框圖形式的PID控制程序,并制作相應(yīng)的程序前面板,使數(shù)字隨動(dòng)系統(tǒng)的控制過(guò)程操作更簡(jiǎn)便,原理更直觀;在之后LABVIEW網(wǎng)絡(luò)通訊功能的設(shè)計(jì)中,選擇利用前面板發(fā)布技術(shù)這種Z為簡(jiǎn)單易行的途徑實(shí)現(xiàn)虛擬儀器的遠(yuǎn)程發(fā)布和控制,又使用了LABVIEW WEB服務(wù)中的API密匙來(lái)設(shè)置遠(yuǎn)程客戶(hù)端訪問(wèn)和控制的權(quán)限,保證了數(shù)字隨動(dòng)系統(tǒng)虛擬儀器遠(yuǎn)程實(shí)驗(yàn)的安全要求。在各部分設(shè)計(jì)過(guò)程的介紹中,還列舉了其他很多方法,都將各種可行方案的優(yōu)缺點(diǎn)進(jìn)行了評(píng)述和對(duì)比,并選出Z優(yōu)的設(shè)計(jì)方案加以實(shí)現(xiàn)。 展開(kāi)
2009-06-19 18:21:52 418 2
有關(guān)大學(xué)化學(xué)的英語(yǔ)翻譯~進(jìn)來(lái)看看。高分懸賞
3.1敵草隆吸附等溫線 圖 2a-c 展示了在沒(méi)有控制酸堿度的情況下,活性碳在不同溫度時(shí)對(duì)敵草隆的吸附量。從各圖可見(jiàn),它們?cè)谘芯克婕暗臏囟确秶鷥?nèi)都很完整,覆蓋至大約 55 mmol L-1的范圍。在整個(gè)受測(cè)試的濃度范圍內(nèi),敵草隆的吸附量都隨著溫度顯著增加,因此... 3.1敵草隆吸附等溫線 圖 2a-c 展示了在沒(méi)有控制酸堿度的情況下,活性碳在不同溫度時(shí)對(duì)敵草隆的吸附量。從各圖可見(jiàn),它們?cè)谘芯克婕暗臏囟确秶鷥?nèi)都很完整,覆蓋至大約 55 mmol L-1的范圍。在整個(gè)受測(cè)試的濃度范圍內(nèi),敵草隆的吸附量都隨著溫度顯著增加,因此,根據(jù)觀察所得,溫度對(duì)敵草隆吸附能力的影響,與Z常見(jiàn)的吸附趨勢(shì)不同。這種明顯的吸熱表現(xiàn),是由于溶液中的敵草隆份子在溫度增加時(shí)更容易出現(xiàn)去溶劑化的情形,因而令敵草隆份子的平面性和擴(kuò)散率都有所增加[10,11,27]。在diyi次進(jìn)行時(shí),圖 2a 的均衡等溫線屬于 L 類(lèi)(更仔細(xì)而言則屬 Giles 分類(lèi)法中的 L-3 分類(lèi) [12]),因而顯示出,敵草隆較低的水溶度和多層吸附現(xiàn)象令它有較好的吸附能力。該條等溫線diyi部份所呈現(xiàn)的坡度遞減,并在高處轉(zhuǎn)平的情形,是大部份稀薄溶液的常見(jiàn)吸附情形。這個(gè)模式代表可供吸附的表面被逐漸占用。雖然等溫線在高處轉(zhuǎn)平所展現(xiàn)的飽和情況被理解為是單層吸附完成的結(jié)果,卻不一定能顯示出一層排列緊密的吸附物本身的序列情況。該層吸附物也可以包含有溶劑的份子和吸附物的份子群,而且,它們除了吸附在原有表面的可吸附位置之外,也可以形成一定程度的多層吸附物,或者填塞在孔洞中。當(dāng)?shù)葴鼐€在高處完全轉(zhuǎn)平的時(shí)候,溶解物的濃度會(huì)隨著溫度而減少,即在15攝氏度和45攝氏度時(shí),濃度分別為約45mmol L-1至約 30 mmol L-1。在過(guò)去的論文中,F(xiàn)ontecha-Cámara 等人 [10] 曾經(jīng)報(bào)導(dǎo):敵草隆在酸堿度為 7 時(shí),對(duì)活性碳纖維和布料的吸附量呈現(xiàn) L 類(lèi)等溫線;而 Bouras 等人 [9] 則報(bào)導(dǎo)敵草隆在酸堿度為 6 時(shí),對(duì)于表面活性經(jīng)過(guò)修改的柱狀粘土的吸附量呈現(xiàn)S類(lèi)等溫線。因此,多層吸附物的形成,似乎是受到吸附面的性質(zhì)影響,而另一項(xiàng)影響因素則是酸堿度對(duì)已吸附的溶解物和尚待吸附的溶解物之間互動(dòng)作用的影響。 展開(kāi)
2013-04-23 21:16:34 465 1
高分懸賞。滿意追加100?。?!陶瓷勺燒成方式有哪些
想做陶瓷的勺子。。請(qǐng)教各位。勺子有哪些燒成方式呢??? 越多越好。。謝謝了~~~ 滿意追加一百。
2009-12-06 14:36:16 420 1
化學(xué)專(zhuān)業(yè)英語(yǔ)翻譯 不要翻譯工具
D,L252單取代海因是工業(yè)生產(chǎn)D2氨基酸的重要前體[1~3]。海因酶具有底物特異性,D2海因酶(EC3151212)可轉(zhuǎn)化外消旋的D,L252單取代海因中的D型消旋體成為D2N2氨甲酰氨基酸,剩余的L252單取... D ,L252單取代海因是工業(yè)生產(chǎn) D2氨基酸的重要前體[1~3 ]。海因酶具有底物特異性 ,D2海因酶(EC 3151212)可轉(zhuǎn)化外消旋的D ,L252單取代海因中的D型消旋體成為D2N2氨甲酰氨基酸 ,剩余的L252單取代海因由于完全不被 D2海因酶所作用 ,如圖 1所示 ,先進(jìn)行消旋 ,從而使得 D ,L2海因完全轉(zhuǎn)化為光學(xué)純的 D2N2氨甲酰氨基酸 ,并進(jìn)一步被轉(zhuǎn)化為D2氨基酸。因此 ,52單取代海因的自發(fā)消旋成為L(zhǎng)2或D2N2氨甲酰氨基酸生產(chǎn)中的一個(gè)重要的步驟。若海因的自發(fā)消旋速率遠(yuǎn)低于海因水解酶的水解速率 ,則海因的消旋將成為D2N2氨甲酰氨基酸生產(chǎn)中的一個(gè)限速步驟。目前關(guān)于 52單取代海因的消旋的文獻(xiàn)非常少 ,海因消旋的細(xì)節(jié)問(wèn)題也沒(méi)有被完全揭示。 1 材料與方法 111 實(shí)驗(yàn)材料 L2丙氨酸(國(guó)家生化工程ZX) 、 L2苯丙氨酸(國(guó)家生化工程ZX) 、氰酸鈉(江都化工廠) ,其他試劑為國(guó)產(chǎn)分析純?cè)噭?112 實(shí)驗(yàn)方法 11211 52取代海因衍生物的制備 采用Henze2Speer法[4~5 ]進(jìn)行52取代海因衍生物的制備: 反應(yīng)溫度為60~80 ℃。反應(yīng)6 h后 ,加入鹽酸酸化 ,繼續(xù)加熱 8 h ,冷卻后過(guò)濾得到的固體用酒精和水的混合溶液重結(jié)晶 ,得到無(wú)色晶狀目的產(chǎn)物。因使用的氨基酸不同 ,反應(yīng)條件略有變化 ,產(chǎn)率一般為40 %~80 % ,所得的52取代海因具有和底物氨基酸相同的旋光方向。 11212 海因衍生物的消旋 a.精確稱(chēng)量41000 g L252甲基海因 ,溶解于蒸餾水中 ,定容至250 mL ,測(cè)定其旋光度 ,并以此值為未消旋化的起始數(shù)據(jù)。 b.用 6 mol/ L 的 NaOH溶液調(diào)整海因溶液 pH值達(dá)810 ,90 ℃水浴2 h ,于旋光儀上測(cè)定其旋光度。 c.同 b ,依次調(diào)節(jié)溶液pH值為710、 810、 910 ,分別測(cè)定其旋光度。 d.同 b ,依次于50 ℃水浴中及室溫下恒溫2 h ,分別測(cè)定其旋光度 ,并與起始數(shù)據(jù)對(duì)比 ,計(jì)算消旋比 r ( %) :r =αt/α0 ,其中αt 為 t 時(shí)間溶液的旋光度 ,α0為溶液初始旋光度。 11213 海因的堿解 精確稱(chēng)量41000 g L252甲基海因 ,溶解于蒸餾水中 ,定容至 250 mL ,用 NaOH溶液和鹽酸分別調(diào)至pH = 2、 8、 12 , 90 ℃水浴反應(yīng)4 h ,中間取樣測(cè)定其N(xiāo)2氨甲酰丙氨酸濃度。 11214 海因的轉(zhuǎn)化 采用012 %的海因溶液 ,按 w (底物)∶ w (菌泥)= 1∶ 5的比例 ,于pH 915 ,溫度40 ℃下進(jìn)行轉(zhuǎn)化。 取樣:取樣10 mL ,加入 5 mL 三停止反應(yīng) ,搖勻 ,放冰箱待測(cè)。 3 結(jié) 論 311 海因的消旋遵循本文所提出的碳負(fù)離子理論 ,其消旋過(guò)程為一級(jí)反應(yīng)動(dòng)力學(xué)過(guò)程。由海因消旋的半衰期可看出提高溫度和pH對(duì)海因的消旋均有利 ,但pH過(guò)高的情況下海因則會(huì)發(fā)生堿解反應(yīng)從而造成損失。 312 本文采用的海因轉(zhuǎn)化酶系中所含為 D2海因酶 ,對(duì)D2海因的轉(zhuǎn)化活性非常高 ,由此可見(jiàn) ,如若采用的轉(zhuǎn)化體系中沒(méi)有消旋酶的存在 ,則海因的消旋成為海因酶轉(zhuǎn)化生產(chǎn)光學(xué)活性氨基酸的一個(gè)限速步驟。 展開(kāi)
2009-06-08 13:22:45 706 3
找?guī)妆净瘜W(xué)品電子書(shū)下載地址,成功追加高分
請(qǐng)各位幫忙找一下這本書(shū)的下載地址,要免費(fèi)下載的,書(shū)名是(實(shí)用化學(xué)品配方手冊(cè)),出版社是 “四川科學(xué)出版社”Z好能整套下載的,若找到類(lèi)似的也可以,書(shū)上大概全是一些化工小配方。
2009-09-28 14:47:49 577 1
材料試驗(yàn)機(jī)的種類(lèi)和價(jià)格?(再追加高分)
不要去百度網(wǎng)站搜索復(fù)制給我,也不要發(fā)個(gè)網(wǎng)站給我誰(shuí)能給我詳細(xì)資料,我重重加分‘‘‘‘如有人有這方面詳細(xì)資料‘不方便寫(xiě)的‘‘可留下手機(jī)號(hào)聯(lián)系‘我也加分‘‘‘... 不要去百度網(wǎng)站搜索復(fù)制給我,也不要發(fā)個(gè)網(wǎng)站給我 誰(shuí)能給我詳細(xì)資料,我重重加分‘‘‘‘如有人有這方面詳細(xì)資料‘不方便寫(xiě)的‘‘可留下手機(jī)號(hào)聯(lián)系‘我也加分‘‘‘ 展開(kāi)
2007-08-03 11:14:30 437 2
急啊~完全看不懂內(nèi)...誰(shuí)來(lái)幫幫我!~ 高分追加!!
The SBSP auction has a DSE: it is a DS for each bidder to bid her own valuation. a seller without any knowledge of the valuations of any of the bidders can in fact elicit the true valuation of every bidder by using Vickrey's ingenious desig... The SBSP auction has a DSE: it is a DS for each bidder to bid her own valuation. a seller without any knowledge of the valuations of any of the bidders can in fact elicit the true valuation of every bidder by using Vickrey's ingenious design of the SBSP. The infinite-horizon alternating-offer bargaining game has a unique SPE. There is no delay in reaching agreement in this model. 請(qǐng)大家?guī)兔?..請(qǐng)大家盡量把縮略語(yǔ)的全稱(chēng)告訴我噢! 謝謝謝謝~~ 展開(kāi)
2009-08-10 02:44:16 433 5
【高分】南京大學(xué)地質(zhì)學(xué)專(zhuān)業(yè)如何?
請(qǐng)全面的介紹一下,如排名,師資力量,以后考研及就業(yè)方向等等. 如果有南大的學(xué)長(zhǎng)或老師或者是了解的人能夠解答就感激不盡了.先謝過(guò).
2009-07-16 09:16:44 436 5

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