“heavy haul operations”的概念、定义、翻译、参考文献-科学参考

单词	heavy haul operations
释义	heavy haul operations Encyclopedia 管理学重载运输释 heavy haul operations重载运输在列车重量至少达到8000吨、计划轴重在27吨及以上、至少150千米线路区段上单线年运量超过4000万吨等三个条件中满足任意两个的铁路运输。
随便看	field observation of frozen soil depth field observation record field observatory field of algebraic functions field of characteristic p field of class two field of coefficients field of complex numbers field of constants field of curvature field of curves field of definition field of definition for variety field of directions field of events field of extremals field of finite type field of force field of formal Laurent series field of fractions field of frames field of functions field of geometric objects field of image field of interpretation

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