“class of railway”的概念、定义、翻译、参考文献-科学参考

单词	class of railway
释义	class of railway Encyclopedia 工学铁路选线设计释 class of railway铁路等级根据铁路在国家铁路网中的作用、性质和远期客、货运量，以及最大轴重和列车速度等条件对铁路划定的级别。
随便看	observing table observing technique observing technology of tilt tide observing under ice obsessive-compulsive disorder obsessive-compulsive personality obsessive-compulsive personality disorder obsessive compulsive related disorders obsidian Obsidian Hydration Dating obsidianite obsolescence law of literature and information obsolete character obsolete old word obstacle obstacle perception of people with visual impairments obstacle problem obstacle scattering obstacles to policy termination obstacle vehicles OB star obstertrics-gynecology hospital（Maternity Hospital） obstetrical procedure in female livestock obstetric and gynecologic clamp obstetric and gynecologic hook & needle

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。