Luxury or Necessity

International railway journal(2015)

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摘要
Before deciding which tamping machines to purchase, rather than simply comparing the purchase price and risking making decisions that will later be regretted, infrastructure maintainers need to look at the whole life cost and overall benefits. For example, while high-performance tamping machines are more expensive to purchase than lower-output machines, just one investment could save up to 60% annually.
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