But the eastern truss bridge and causeway would eventually have to come down .
但东部的桁架桥及公路最终将不得不倒塌下来。
It took 35 days to assemble the first truss , 10 days for the second one and 1 day for the third one .
工人们花了35天组装第一根桁架,第二根用了10天,第三根只用1天。
The project also included a tunnel to logan airport as well as a cable-stayed bridge to replace the double-decker truss bridge over the charles river .
该项目还包括一条洛根机场隧道和一个取代查尔斯河上的双层桁架桥的斜拉索桥。
The international space station is equipped with two independent cooling systems , or coolant loops , mounted on the lab 's main solar power truss .