骨架密实型沥青混合料由于能够兼顾各项路用性能，得到越来越多路面工程师的青睐。
Asphalt mixture with skeleton dense structure has won increasing reputations by pavement engineers because of its good pavement performance.
当25万人在桥上时，工程师们注意到一件可怕的事情：路面被有史以来最沉重的负荷压扁了。
By the time 250,000 were on the bridge, engineers noticed something terrible: the roadway was flattening under what turned out to be the heaviest load it had ever been asked to carry.
例如，设计路面的工程师并不一定要把他们的尝试完全建立在实验的基础上，而是能用其他人的结论作为参考。
For example, engineers designing a pavement do not have to base their attempts entirely upon experimentation, but can use reference sources that describe the conclusions of others.
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