【正文】
section has been shown to significantly reduce congestionrelated accidents on some shoulders for several kilometers, however, has not had the same ,在短程的瓶頸路段為了額外的通行能力,將路肩轉(zhuǎn)變成行車(chē)道能顯著減少由道路擁擠導(dǎo)致的交通事故。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(chē)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(chē)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。Some studies have been made regarding the benefits of wider edge line markings(150 to 200 mm versus the standard 100 mm width).The wider markings may particularly benefit older (150到200毫米相對(duì)于100毫米的標(biāo)準(zhǔn)寬度)。第三篇:專(zhuān)業(yè)英語(yǔ)翻譯樁筏基礎(chǔ)的簡(jiǎn)化設(shè)計(jì)方法摘要:在筏板基礎(chǔ)本身并不能滿(mǎn)足設(shè)計(jì)要求情況下,可通過(guò)在筏板下增加樁來(lái)提高其承載力。本文分析了簡(jiǎn)化計(jì)算方法的過(guò)程,對(duì)樁筏基礎(chǔ)的初步設(shè)計(jì)提供了有用的依據(jù)。第四篇:專(zhuān)業(yè)英語(yǔ)翻譯 Steel Behaviour土木0704喬薈07231104靜載下的力學(xué)性能 。鋼的彈性,同時(shí)保持在這個(gè)線性范圍,完全恢復(fù)。超過(guò)這個(gè)限制塑性鋼的流動(dòng)沒(méi)有任何壓力,直到應(yīng)變硬化應(yīng)變的增加就達(dá)到了。屈服應(yīng)力或許是結(jié)構(gòu)鋼的最重要的強(qiáng)度特性,它隨著鋼材化學(xué) 不同發(fā)生顯著的變化,最重要的成分是碳和錳,兩者都會(huì)引起屈服應(yīng)力的提高。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。所應(yīng)用的屈服應(yīng)力不隨厚度而變化。由于成分組成,熱處理方法,壓制次數(shù),板厚和試驗(yàn)速率的小的變化,在這些試驗(yàn)結(jié)果中有種顯著的分布,這種分布近似服從正態(tài)分布曲線。當(dāng)然,這種區(qū)別會(huì)更明顯的如果試驗(yàn)不再橫截面最后的位置進(jìn)行的話。重復(fù)荷載下的疲勞破壞結(jié)構(gòu)鋼經(jīng)過(guò)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。這通常是橋梁,起重機(jī),和支撐機(jī)械的結(jié)構(gòu)物的問(wèn)題,而且風(fēng)和波浪荷載也可能引起疲勞問(wèn)題。通常,節(jié)點(diǎn)應(yīng)當(dāng)布置得使應(yīng)力集中減少到最小,以使通過(guò)節(jié)點(diǎn)的‘應(yīng)力流,盡可能平滑。壓力聚集者,應(yīng)避免。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。一旦開(kāi)始,裂紋就會(huì)穩(wěn)定增長(zhǎng)因?yàn)橥饬?huì)提供撕裂鋼材所需的能量。只要有足夠的應(yīng)變內(nèi)能,這種裂縫是自擴(kuò)展的并且將延伸至被擴(kuò)展路徑中的延性元件破裂。由于鋼材的延性,在三向約束條件下,結(jié)構(gòu)對(duì)脆性破壞的抵抗由局部應(yīng)力集中的大小確定。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)。像發(fā)生在更厚或者更大顆粒元素的鋼材中南,三向的幾何約束也會(huì)促進(jìn)脆性,這是因?yàn)橛懈叩木植繎?yīng)力,因?yàn)樵陂_(kāi)裂過(guò)程中的更大的能量釋放和裂縫傳播的減緩。裝配技術(shù)應(yīng)該盡量避免引進(jìn)潛在的危險(xiǎn)裂縫或缺陷。當(dāng)然,設(shè)計(jì)者還必須適當(dāng)考慮特種鋼,制造技術(shù),檢測(cè)和修正程序的額外費(fèi)用。216。在某些類(lèi)型的結(jié)構(gòu)檢驗(yàn)中,還需要有內(nèi)部的穩(wěn)定,例如鋼筋混凝土墻,加固土墻。結(jié)構(gòu)內(nèi)力和彎矩應(yīng)該由設(shè)計(jì)土壓力和水壓力確定。為了方便垂直力量包括墻壁的垂直載荷的重量和任何它可能攜帶,隨土壤以上的L形和T形墻踵重量在一起。216。當(dāng)擋土結(jié)構(gòu)擠壓墻后土體時(shí),產(chǎn)生被動(dòng)土壓力。靜止土壓力表示介于主動(dòng)和被動(dòng)兩種極限狀態(tài)之間的情況。土最重要的性質(zhì)看來(lái)是密度、砂土的內(nèi)摩擦角、黏性土的黏聚力和超固結(jié)比。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。一般土壓力楔體理論的公式(考慮了沿?fù)跬翂γ娴哪Σ粒┮部梢杂脕?lái)計(jì)算墻體和填土面傾斜等其它所有情況下的水平分力。如果考慮進(jìn)關(guān)于實(shí)際坡度的條件的不確定性,將擋土墻簡(jiǎn)化為墻背垂直填土面水平的情況進(jìn)行計(jì)算,也是足夠精確的。然而,該角度在任何情況下都不能超過(guò)墻后填土的內(nèi)摩擦角。浸沒(méi)土的壓力可由式()給出,只不過(guò)式中采用的材料容重會(huì)由于水的浮力和浸沒(méi)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。第五篇:專(zhuān)業(yè)英語(yǔ)翻譯1)Electricity can be measured in amount and 。3)Electric power is generated in power generating stations or 。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(chēng)為電容器,它儲(chǔ)存電能的能力就被稱(chēng)為電容。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。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(shí)驗(yàn)。5)Conducting electricity means the flow of electrons through an 。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(guò)是三個(gè)單相電路的組合。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(mǎn)足不斷增長(zhǎng)的用電需求。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(gè)系統(tǒng)應(yīng)該使用開(kāi)環(huán)控制方法。3)The device includes an instrument transformation and a relay system which has two circuits in device