前言：铁路货物运输枢纽的调车场中，驼峰调车是主要的调车手段。
As a major part in railroad freight transmit in railroad classification yard. The "hump" and switches to classification tracks are major system in freightcar calssification.
前言：铁路货物运输枢纽的调车场中，驼峰调车是主要的调车手段。
As a major part in railroad freight transmit in railroad classification yard. The "hump" and switches to classification tracks are major system in freightcar calssification.
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