正文翻譯
原創(chuàng)翻譯：龍騰網(wǎng) http://www.ltaaa.com 翻譯：山東姐妹 轉(zhuǎn)載請(qǐng)注明出處

Traffic-signal poles must be strong enough to bear the weight of road signs,street lights,and,of course,traffic signals.

交通信號(hào)桿必須足夠堅(jiān)固，以承受路標(biāo)、路燈、以及交通信號(hào)燈的重量。

The poles are also built to withstand extreme weather conditions,such as high wind sand heavy snow accumulation.

燈桿同時(shí)也要能夠抵御極端惡劣天氣環(huán)境，比如大風(fēng)，比厚厚的積雪。

Traffic signal poles are made of high-strength steel.

交通信號(hào)桿是用高強(qiáng)度鋼材制成的。

Years of weather exposure can cause corrosion,so the poles are galvanize don both sides for protection.

常年的暴露可能會(huì)腐蝕鋼材，所以電線桿要鍍鋅以防止腐蝕。

The machine cuts the sheet into a rectangular shape,or a trapezoid shape if the pole will taper at the top.

機(jī)器把鋼板切割成長(zhǎng)方形，如果圓柱燈桿是頂部比較細(xì)的款式，那就切割成梯形形狀。

Workers number the machine lines with chalk,giving lines directly opposite of each other the same number.

工人們用粉筆給每個(gè)記號(hào)編上數(shù)字記號(hào)，而相同的數(shù)字記號(hào)按照軸線對(duì)稱排列。

Then they transfer the sheet to a bending machine called a press brake.

然后他們把鋼板轉(zhuǎn)移到一臺(tái)叫做折彎?rùn)C(jī)的折彎?rùn)C(jī)上。

The press brake bends the sheet along the marked line to a preprogrammed angle.

折彎?rùn)C(jī)沿標(biāo)記線將鋼板彎成預(yù)編程的角度。

Workers use a digital measuring device to make sure the first bend is accurate.

工人們使用數(shù)字測(cè)量裝置來(lái)確認(rèn)第一次彎曲的角度是否準(zhǔn)確。

If it is,they continue bending along the remainder of the lines,transforming the flat sheet into a multisided round pole.

如果準(zhǔn)確，工人們就繼續(xù)沿著線的其他的標(biāo)記線彎曲鋼板，漸漸把平鋼板彎曲成一個(gè)多面圓柱。

The factory ships the finished poles to a galvanizing plant,where they''''re dipped in a series of wash tanks.

工廠將成品燈桿運(yùn)到鍍鋅廠，在那里燈桿被浸泡在一連串的洗滌槽里。

[copy]The plant''''s tanks are deep enough to fully submerge the poles so they can treat both the inner and outer surface at the same time.

工廠中的洗滌池足夠深，可以完全浸沒(méi)整個(gè)燈桿，這樣池中溶液就可以同時(shí)處理燈桿的內(nèi)表面和外表面。

Now the poles go into a vat of sulfuric acid.

現(xiàn)在桿子要被浸泡到一個(gè)裝滿硫酸的池子中。

This bath dissolves the more stubborn contaminants that washing can''''t remove.

池中硫酸可以溶解清洗之前無(wú)法去除的頑固污染物。

The next tank contains a chemical that weakens the surface of the poles.

下個(gè)池子會(huì)配有一能會(huì)化蝕燈桿表面的化學(xué)溶液。

This allows the galvanizing metal to penetrate the steel,rather than sit on the surface.

讓鍍鋅金屬離子能夠穿透鋼材，而不是停留在鋼材表面。

The final tank contains molten zinc.

最后一個(gè)池子里是一池熔化了的鋅水。

As the poles bathe in the 842-degree zinc,workers in fire-protection suits skim the surface to remove iron oxide and ash that floats to the top.

當(dāng)燈桿浸泡到842度的鋅水中時(shí)，穿著防火服的工作人員會(huì)清除漂浮在池面上的氧化鐵和灰燼。

This keeps the freshly galvanized surface clean as the poles are hoisted out ofthe tank and set aside to cool.

這樣可以讓鍍好鋅的燈桿從842度的鋅水池里吊出來(lái)放在一邊冷卻時(shí)，它的表面保持干凈。

Because they''''re galvanized rather than painted,these poles are able to support traffic lights,signs,and street lamps for 40 years or more.

由于燈桿是鍍鋅的而不是油漆的，所以這些燈桿能夠支撐交通信號(hào)燈、路標(biāo)牌和路年至少40年時(shí)間。