non-productive time

基本解释

Fouled or clogged tube bundles cause non-productive time and to losses in efficiency.
管束结垢或堵塞会导致故障和降低生产效率。
This in turn is directed towards the avoidance of non-productive time which is mainly due to the number of setups, setup time, workpiece handling time, tool change time and lead time.
同时，主要通过减少更换设备、操作工件、换刀时间和交货时间的非生产性时间来减少生产成本。
Therefore, formulate a scientific and reasonable Motor Train maintenance plan is important to guarantee the security operation of Motor Train and reduce the non-productive time of Motor Train.
因此，制定科学合理的动车组检修计划，对于保障动车组的安全运行和提高动车组的运用效率具有重要的意义。

Let them see how their utilization (productive versus non-productive time) does exactly that.
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