【正文】 we often use is very good in 。我們可以很容易地買到或制造電阻器，但很快我們發(fā)現(xiàn)這種物理元件只有當電流、電壓或者功率處于特定范圍時其電壓——電流之比才是恒定的，并且這個比值也取決于溫度以及其它環(huán)境因素。Section 5 Exercise 3 相電壓與相電流之比等于電路的阻抗，符號為字母Z，阻抗是一個具有量綱為歐姆的復數(shù)量。鋁、鐵、硅氧化物是普遍存在于地球地殼的礦物，他們通常被用于除去水中污染物,因為鋁和鐵氧化物具有較高的表面積和零點電荷(,86范圍內(nèi)，在Al(III)/SiO2 中的亞硒酸鹽吸附受電解質(zhì)濃度影，這并不表示pH值的增長。擬合數(shù)據(jù)顯示，分別地由Al(III)/SiO2吸收硒酸鹽和亞硒酸鹽的最大吸附容量(Qmax)，由Fe(III)/SiO2吸收硒酸鹽和亞硒酸鹽的 Qmax是 。至于二元氧化物系統(tǒng)吸附亞硒酸鹽和硒酸鹽的機制,之前的光譜研究表明,硒的吸附是鋁和鐵氧化物形成內(nèi)球面配合物的配位體與羥基在礦物表面交換(Peak,2006)。這個偽二階動力學模型是最好的模型去描述二元氧化系統(tǒng)的動力學數(shù)據(jù)。圖5和表4表明了在樣品上進行的硒的Kedge EXAFS在pH=。亞硒酸鹽在Fe(III)/。在Fe(III)/SiO2體系上的亞硒酸鹽和硒酸鹽的Se金屬鍵長實際上是一樣的。在pH=, 在Al(III)/SiO2和Fe(III)/SiO2中的亞硒酸鹽形式內(nèi)球體復合物，分別地包括雙配位基和單配位基。第五篇：專業(yè)英語翻譯Forces of Interactions between Bare and PolymerCoated Iron and Silica: Effect of pH, Ionic Strength, and Humic Acids The interactions between a silica substrate and iron particles were investigated using atomic force microscopybased force spectroscopy(AFM).The micrometerand nanosized iron particles employed were either bare or coated with carboxymethyl cellulose(CMC), a polymer utilized to stabilize iron particle effect of water chemistry on the forces of interaction was probed by varying ionic strength(with 100 mM NaCl and 100 mM CaCl2)or pH(4, , and 8)or by introducing 10 mg/L of humic acids(HA).When particles were uncoated, the forces upon approach between silica and iron were attractive at pH 4 and and in 100 mM CaCl2 at pH 8, but they were negligible in 100 mM NaCl buffered to pH 8 and repulsive in water buffered to pH 8 and in HA produced electrosteric repulsion between iron particles and silica, likely due to its sorption to iron sorption to silica was excluded on the basis of experiments conducted with a quartzcrystal microbalance with dissipation with CMCcoated iron was attributed to electrosteric forces, which were damped at high ionic extended DLVO model and a modified version of Ohshima’s theory were successfully utilized to model AFM 、離子強度和腐殖酸對硅與裸露鐵粒子和高分子聚合物包裹鐵粒子之間相互作用的影響 利用以原子力顯微鏡為基礎的光譜法研究石英基片和鐵顆粒之間的相互作用。與羧甲基纖維素包鐵顆粒的斥力是由于靜電力量，這種靜電力在高離子強度會減弱。腐殖酸使鐵顆粒和二氧化硅之間產(chǎn)生靜電斥力，可能由于其吸附鐵顆粒。本文分析了簡化計算方法的過程，對樁筏基礎的初步設計提供了有用的依據(jù)。從這項研究中,我們觀察到Al(III)/SiO2和Fe(III)/SiO2從水溶液清除硒含氧陰離子是有效的。根據(jù)EXAFS原則, x射線吸收原子和周圍原子的距離就是一個鍵長。在針鐵礦上有內(nèi)球體硒酸鹽的存在是符合Manceau and Charlet(1994)(表4)。因為亞硒酸鹽強烈的通過結合金屬氧化物表面形成更強壯的內(nèi)球面復合物，在緩慢的過程中亞硒酸鹽需要花更多的時間到達平衡(Balistrieri and Chao,1987，Hayes,1987，Neal et al,1987，Zhang and Sparks,1990，Scott and Morgan, 1996)。兩個二元氧化物系統(tǒng)的更大的表面地區(qū)和更小的顆粒尺寸提高吸附反應的概率。鐵顆粒在二氧化硅上的沉淀物不能增加任何吸附地方，二氧化硅的帶負電荷的表面增加了硒含氧陰離子和二氧化硅之間的排斥力。吸附數(shù)據(jù)通過Langmuir 等溫線裝備好（r 2 ,P (n=7))(圖表2)。倫茨et al，2008)。而這種方法被稱為疊加法。（介賓從句）The fact that everything around us is matter is known to 。（賓語從句）The fact is that radio waves travel as fast as light 。 plants fueled by uranium account for a continually increasing share of the load, but their construction is slow and uncertain because of the difficulty of raising capital to meet the sharply rising cost of construction, constantly increasing safety requirements which cause redesign, public opposition to the operation of the plants, and delays in through a circuit, the current will lose part of it ，要損耗掉一部分能量。, loads are devices those consume electric energy or electric power consumed by customers mainly in distribution ，負荷是主要在配電網(wǎng)中消耗電能的設備或者由用戶消耗的功率?！癆 per unit of B” 表示 “單位B上的A” 或者“A/B”。3)The testing of a crossfield generator will be described in this section with chief reference to the tests that are normally taken on every machine before it leaves the makers ，它主要涉及每臺電機在離開制造廠前應進行的試驗。3)The transistor, which is working with correctly polarities, can work as an transistor working with correctly polarities can work as an ，作用就像放大器。電容的測量單位是法拉。事實上，神經(jīng)學家格特在Schwartz的情況下，一些電極已持續(xù)長達3年?！痹贏LS患者，他們保留了一些轟動，甚至被摧毀后，大多數(shù)運動神經(jīng)元，利用觸覺反饋會特別有用?？茖W家們?nèi)缓髷嚅_操縱桿猴子雖然仍然可以處理它，跑了神經(jīng)信號解碼的游戲。信用： /杜克大學最近，神經(jīng)學家安德魯他們教這些猴子用自己的雙手操作操縱桿，操縱游標，或達到了他們的武器搶一塊水果，并把它帶到自己的嘴巴。）光通信技術肯尼迪發(fā)明通過一種新的電極在大腦中，化學品襯玻璃錐哄神經(jīng)元增長錄音電線通過電極和紐帶。查平說：”我們對一個詞的概念。佐治亞州的摩爾和她的同事們使用BCI2000發(fā)展環(huán)境控制系統(tǒng)，允許用戶打開和關閉的燈，一臺電視機，和腦電波的無線電。另一個提取大腦信號所需的功能，如萬畝節(jié)奏或P300的信號，并轉(zhuǎn)換信號轉(zhuǎn)換成光標在某一個方向的運動，如命令。他們分享它廣泛，使其更容易進入該領域的新人。他們能讓它溜走前進，右轉(zhuǎn)，左轉(zhuǎn)，或停止，從而能夠直接以驚人的速度通過樣板房。donchin和他的團隊現(xiàn)在開始，以測試他們的BCI嚴重殘疾的病人。相比之下，腦機接口控制技術的發(fā)展由心理學家伊曼紐爾Donchin現(xiàn)在在坦帕的南佛羅里達大學，幾乎沒有需要培訓。通常一個人首先學會做此想象向上或向下移動手或身體的其