铁路机车（或称作火车头、机车头）是一种用来提供铁路列车动力个铁路车辆，渠个作用是拉轨道上驱动列车。现时有些列车已包含自力推进、能载重个车组，但渠拉按常理来讲弗会被视为“铁路机车”，而是被定义为“动力分散式列车”、“动车组”等。
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