“铁路工程”常见的英文表达是 “railway engineering” 或 “railroad engineering”(在美式英语中较常用“railroad” )。
例如:
He specializes in railway engineering.(他专攻铁路工程。)
Railway engineering involves the planning, design, and construction of railway systems.(铁路工程涉及铁路系统的规划、设计和建设 。)