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工作。第三篇:專業(yè)英語翻譯1)Electricity can be measured in amount and 。5)Electrical energy can be stored in two metal plates separated by an insulation a device is called a capacitor, and its ability to store electrical energy is termed is measured in ,這樣的裝置被稱為電容器,它儲存電能的能力就被稱為電容。3)We must do various experiments before a new electronic product is designing a new electronic product we must do various ,我們必須做各種實驗。2)A threephase circuit, as it was pointed out above, is merely a bination of three singlephase threephase circuit, as pointed out above, is merely a bination of three singlephase ,三相電路只不過是三個單相電路的組合。1)If it is possible, the openloop control approach should be used in this possible, the openloop control approach should be used in this ,這個系統(tǒng)應(yīng)該使用開環(huán)控制方法。2)The reluctance motor operates synchronously at a speed which is determined by the supply frequency and the number of poles for which the stator is ,該速率是由電源頻率和定子繞制的級數(shù)決定的。 the system expands and higher voltage levels bee necessary for transmission, the older transmission lines are often relegated to subtransmission ,舊的輸電線路往往被移交給中壓輸電功能?;颍弘娙荽嬖谟趯?dǎo)體之間,等于導(dǎo)體之間單位電壓對應(yīng)的電量。這樣的裝置稱之為電容器,其儲存電能的能力稱為電容。 illustrated in , the aggregated load represented at a transmission substation(bus A)usually includes, in addition to the connected load devices, the effects of substation stepdown transformers…,在輸電變電站(母線A)所給出的集合負荷,除了所連接的負荷設(shè)備以外,通常還包括變電站降壓變壓器的影響……。 synchronous machine as an AC generator driven by aturbine is the device which converts mechanical energy to electrical energy, in powers ranging up to ,同步電機是將機械能轉(zhuǎn)化為電能的設(shè)備,其功率范圍高達1500MW。 stations are usually located near a river or lake because large quantities of cooling water are needed to condense the steam as it exhausts from the ,這是因為需要大量的冷卻水在蒸汽從汽輪機排出時將其冷凝。(動名詞作介賓)Mechanization is using machines instead of hand 。(表語從句)You should determine which of the following functions is 。(定語從句)The places where small puters can be used appear 。(賓語從句)Electrons always move toward where the potential is 。我們通常應(yīng)當(dāng)把線性電阻器僅僅稱為電阻器。另一種方法是求出每個獨立源對變量的作用然后把它們進行疊加。阻抗不是一個相量,因此不能通過把它乘以并取其實部把它轉(zhuǎn)換成時域形式。Se這種基本的或有毒的特性在生物中不僅取決于其濃度狀況,而且也在于其直接影響吸收和生物利用度的化合物(米凱爾森et al,1989。Hayes博士(1987年)增加報道,亞硒酸鹽吸附在吸附劑、針鐵礦(aFeOOH),形成一個內(nèi)球體復(fù)合體,硒酸鹽形成一個弱外球體,然后硒酸鹽在吸附劑會受在電子雙層理論上易溶效應(yīng)的影響。為了探討吸附能力,一系列的亞硒酸鹽和硒酸鹽溶液和在pH=5下用24h準備的兩個二元氧化物進行振蕩。就硒物種的吸附能力考慮, Al(III)/SiO2和Fe(III)/SiO2似乎比粗鋁或鐵氧化物涂層砂高得多(Lo和Chen,1997,Kuan et al,1998)。對亞硒酸鹽和硒酸鹽吸附而言,Al(III)/SiO2體系相比Fe(III)/SiO2體系顯示了一個更大的容量,來源于Al(III)/SiO2體系對硒含氧陰離子有更多的正電荷造成的高親和力(圖1)。為了研究吸附過程的機制,我們使樣品遭受到二元氧化物系統(tǒng)吸附的硒的XANES和EXAFS光譜。個別的硒酸鹽去除百分比可以達到99,在Al(III)/SiO2和Fe(III)/SiO2中30分鐘可以除去96%,吸附也接近平衡(圖4b)。表3表明顯示了通過t/qt的圖形從偽二級動力學(xué)模型得到確切系數(shù)(r2)和其他參數(shù)來確定V0和qeq所有的媒體價值。不像亞硒酸鹽,上清液pH值是穩(wěn)定的,表明氫氧離子在吸附過程中被釋放出來。在圖5a,b上顯示了這個徑向結(jié)構(gòu)功能(RSFs)的傅里葉轉(zhuǎn)換數(shù)據(jù)。亞硒酸鹽吸附在其他鋁軸承礦物表面這個和以前的研究(Hayesetal,1987)達成良好的協(xié)議,這也報道了雙配位基、雙核的表面絡(luò)合作用。在二元氧化系統(tǒng)上硒酸鹽局部結(jié)構(gòu)是由EXAFS裝置指導(dǎo)的(表4和圖5b)。EXAFS擬合數(shù)據(jù)表明硒酸鹽在Fe(III)/SiO2的鍵長比在Al(III)/SiO2的長。鍵長適合特性的估計精度是177。結(jié)論根據(jù)研究結(jié)果,我們提出在二元氧化物系統(tǒng)上鋁或鐵氧化物可以修改二氧化硅的負表面電荷,應(yīng)用二元氧化物系統(tǒng)吸附陰離子、硒含氧陰離子。然而, 在Al(III)/SiO2上的硒酸鹽形成較弱的內(nèi)球體單配位基復(fù)合物,在Fe(III)/SiO2上的硒酸鹽也是這樣的。合理的布置一定量的樁,可以提高樁筏基礎(chǔ)的承載力和減少總沉降和差