Evenness is an important index of quality control of high grade highway. Evenness not only influences on highway usage quality, smooth drive and safety, but also on highway environment quality.
平整度是高等级公路质量控制中的重要指标之一，平整度的好坏直接影响公路使用质量、行车舒适、安全，同时也关系到公路环境质量。
Rational small bridge and culvert investigation, design takes important role in reducing construction cost, easy construction and giving a full play to highway usage performance after completion.
合理的小桥涵勘察、设计，对降低工程造价、方便施工及竣工后充分发挥公路使用效能具有重要作用。
Counterpoised traveling bridge-erecting machine is one of the main equipments of the under construction usage of the highway bridge.
配重行走式架桥机是公路桥施工中使用的主要设备之一。
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