其中最重要的几个方面是系统的复杂性，实施的高成本和对快速ROI(投资收益)的高要求。
Among the most important ones I can see system complexity, implementation cost and high demand for fast ROI.
该项目的实施将有助于减少客运和货运交通所用的时间，降低交通成本，提高城市交通系统的可靠性和安全性。
The benefits of this project include reduced travel time for passengers and freight transport, lower transport costs, and increased reliability and safety of the urban transport system.
接着依据作业成本法系统操作的一般程序设计原则，设计了卷烟厂设备维修实施作业成本核算的程序。
Then based costing system operation principle of the general programming designed cigarette factory equipment maintenance procedures for the implementation of operating cost accounting.
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