机车是铁路运输企业十分重要的可移动运输资源，铁路可变成本的很大部分就是由机车运用产生的。
Locomotive is one of the important movable transportation resources in railway enterprise, which contributes a lot to the variable cost of railway transportation operations.
机车使用台数的多少、机车运用效率的高低都直接影响着铁路运输生产的数量与质量指标。
The locomotive usage set number of how much, the locomotive usage efficiency of high and low all affect the quantity and the quantity index sign that the railroad transports the production directly.
内燃机车仍在铁路牵引中起主导作用，提高内燃机车的运用可靠性势在必行。
The diesel locomotive still plays a leading role in Railway traction, and to improve the reliability of the use of diesel locomotives is imperative.
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