The system is available for earth-rock allocation problems in road projects, airport projects and other large-scale civil engineering.
同时，本系统对道路工程、机场及其他大型土建工程中的土石方调配问题同样适用。
The presented method can be easily used in engineering and has important applied value for reliability evaluation of large-scale complicated system.
所提出的方法，便于工程应用，对于大型复杂系统可靠性评定，具有重要的参考价值。
As a large scale software system, PDM related to many it technology, and it must be developed under software engineering technology.
PD M作为一个大型软件系统，涉及到许多IT技术，必须遵照软件工程的方法来进行开发。
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