... railroad overbridge铁路跨线桥(铁路线在上) railroad engineering铁路工程学 railroad diesel fueln.机车用柴油 ...
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railroad engineering survey [铁路] 铁路工程测量
railroad engineering surveying 铁道工程测量学
railroad engineering design 铁路工程设计
railroad bridge engineering 铁路桥梁工程
It is an important reason to affect the accuracy of railroad engineering design estimate whether the bill of quantities calculation of all specialties is accurate.
影响铁路工程设计概算准确性的一个重要原因，就是各专业的工程量计算是否准确。
Nowadays, in mountain railroad engineering survey, the efficiency of traditional leveling method is low, is very difficult to practice because of terrain undulation being big.
目前在山区铁路工程测量过程中，由于地形起伏较大，传统的水准测量效率低，非常难以实施。
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