【正文】 疊加法原理表明線性電路某個(gè)元件兩端的電壓（或流過元件的電流）等于每個(gè)獨(dú)立源單獨(dú)作用時(shí)該元件兩端的電壓（或流過元件的電流）的代數(shù)和。（同位語從句）Section 2 Exercise 3Section 3 Exercise3 必須強(qiáng)調(diào)的是線性電阻器是一個(gè)理想的電路元件；它是物理元件的數(shù)學(xué)模型。（表語從句）The places where small puters can be used appear 。（現(xiàn)在分詞短語作狀語）Doing experiment is of great help to 。 loads absorb electric energy from the power system and converts it into energy of other forms, which may be heat energy to heat water or to melt irons, or mechanical energy to drive a machine, ，并將其轉(zhuǎn)換為其他形式的能量，可能是燒水或溶化鋼鐵的熱能，或者是驅(qū)動(dòng)機(jī)器的機(jī)械能等。 of the three phases can be restored by exchanging the positions of the conductors at regular intervals along the line so that each conductor occupies the original position of every other conductor over an equal distance, as shown in ，沿線路方向每隔一定間隔就交換導(dǎo)線位置，使每根導(dǎo)線都能占據(jù)具有相同輸電距離的其他各導(dǎo)線的初始位置，以重建三相平衡。1)All radiant energies have wavelike characteristics, which are analogous to those of waves moving through radiant energies have wavelike characteristics analogous to those of waves moving through ，與水中移動(dòng)的波的特征相似。1）The capacity of individual generators is larger and larger so that the increasing demand of electric power is capacity of individual generators is larger and larger to satisfy the increasing demand of electric ，目的就是滿足不斷增長(zhǎng)的用電需求。1)The signal should be filtered before it is signal should be filtered before being ，應(yīng)先對(duì)其進(jìn)行濾波。浸沒土的壓力可由式()給出，只不過式中采用的材料容重會(huì)由于水的浮力和浸沒條件下的內(nèi)摩擦系數(shù)而降低；除此之外，也必須包括完全的靜水壓力。假定該墻體采用通常的施工方法進(jìn)行回填，并且能夠產(chǎn)生一小的轉(zhuǎn)動(dòng)（）引發(fā)回填土的內(nèi)摩擦。216。216。不僅會(huì)增加局部應(yīng)力而且有可能成為裂紋擴(kuò)展區(qū)。沖擊荷載下的脆性破壞 結(jié)構(gòu)鋼不總表現(xiàn)出可塑的特性，在一些情況下可能發(fā)生突然破壞，即使名義拉應(yīng)力很低。重復(fù)荷載下的疲勞破壞結(jié)構(gòu)鋼經(jīng)過多次的循環(huán)交變荷載后可能在低水平拉應(yīng)力條件下發(fā)生破壞。硬化也可以提高屈服應(yīng)力，拉伸的速率影響屈服應(yīng)力，高拉伸速率會(huì)提高前期屈服應(yīng)力。第四篇：專業(yè)英語翻譯 Steel Behaviour土木0704喬薈07231104靜載下的力學(xué)性能 。Pavement marking, such as lane lines, edge lines, channelizing lines at interchanges and ramps, and word symbol markings, provide important information to the ，像在立體交道和斜坡處的車道線，邊緣線，通道線以及文字和符號(hào)標(biāo)記，為駕駛員提供重要信息Pavement markings define separate lanes of traffic traveling in the same direction, inform drivers of lane restrictions, and convey certain regulation and warnings that would not otherwise be clearly ，告訴駕駛員該車道限速，以及傳達(dá)某些規(guī)則和警告，否則，它們不會(huì)被駕駛員清楚的明白。Safe and efficient traffic operations depend on adequate laneand shoulder widths as outlined in A Police on Geometric Design of Highways and 《道路的幾何尺寸的規(guī)定》設(shè)計(jì)的適當(dāng)?shù)男熊嚲€和路肩寬度。另外，其他的設(shè)計(jì)特性，如較寬的中央分隔帶和較寬的路肩、路邊無障礙物、大量采用防護(hù)欄等也是關(guān)鍵要素。開發(fā)工具采用VB ，數(shù)據(jù)庫采用Access 2000。1．2系統(tǒng)運(yùn)行模式的選擇當(dāng)前流行B/S和C/S這兩種模式結(jié)構(gòu)。The higher design speeds(設(shè)計(jì)速度)used for freeways result in long sight distances(視距)due to long radiushorizontal curves and long vertical curves, and otherdesirable design features that create a safe ， most of the nation’s freeways enjoy thisrelatively high level of design and safety, there are many opportunities for further ，但還是有很多地方需要進(jìn)一步增強(qiáng)。The need to acmodate more traffic within existing or limited additional rightofway on highvolume urban freeway has led some agencies to increase capacity by exchange fulllane or shoulder widths for additional travel lanes with reduced ，在已有的或者額外有限的公路用地條件下，容納更多的交通的需求，導(dǎo)致許多機(jī)構(gòu)通過減小車道寬度或者路肩寬度來騰出額外的車道來提高通行能力。Pavement markings are particularly important at night and during inclement weather, and,therefore, must be wellmaintained painted pavement markings are acceptable, thicker, longlife markings ,such as thermoplastic or performed tapes ,may perform better in wet weather and heavy ，厚的，長(zhǎng)壽命的標(biāo)記，像熱塑性塑料或預(yù)成行的條帶，可以在潮濕的空氣和交通繁忙時(shí)表現(xiàn)得更出色。最初的剛才有一個(gè)線性的應(yīng)力應(yīng)變曲線的斜率是楊氏彈性模量。根據(jù)設(shè)計(jì)目的，各個(gè)不同的鋼級(jí)別要確定一個(gè)最小屈服應(yīng)力，在澳大利亞和英格蘭，是根據(jù)化學(xué)組成和熱處理方法來分級(jí)的，而且各個(gè)級(jí)別的屈服應(yīng)力隨壓制面最大厚度的增加而減小，另一方面，美國(guó)的慣例是在個(gè)級(jí)別內(nèi)區(qū)分化學(xué)組成和