“economical haul distance”的概念、定义、翻译、参考文献-科学参考

单词	economical haul distance
释义	economical haul distance Encyclopedia 经济学经济运距释 economical haul distance经济运距某种运输方式运送旅客货物所能产生最佳经济效益的范围。是在各种运输方式之间比较而测算出来的具有一定变化范围和幅度的数值，即在不同的交通运输网布局、客货源状况、运输装备技术经济特性等运输条件下，各种运输方式的经济运距将产生一定的变化。
随便看	Ancient Ship, Women and Net ancient silkworm rearing implements Ancient Sites and Stelae in North of the Yellow River Ancient Sites in China Ancient Society Ancient Sogdian Letters ancient sports in foreign countries Ancient Subsistence Study ancient.sunspot observation ancient systematic scientific thought Ancient Tea Garden at Yushan ancient tea set ancient thread stitching ancient timers Ancient Tombs at Baling Hill Ancient Tombs at Leigudun Ancient Tombs at Liudingshan Ancient Tombs at Longtoushan Ancient Towpath ancient tree group in Eryuan County ancient trees in Beijing center Ancient Trees in Mount Tianmu ancient trees in the Ming Tombs, Changping ancient trees in the Tanzhe Temple ancient trees in the Temple of Heaven Park

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。