Construction sites through the rational transformation and distribution of urban land to achieve environment-friendly.

通过对建设用地的合理改造和布局，实现城镇用地的环境友好。

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Optimization results show the necessity and feasibility of rational transformation and maintenance based on performance study of units.

优化结果表明：通过对机组的特性研究，进行合理的改造、维护是非常必要的，而且是可行的。

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Rational Software Architect contains a transformation framework that provides support for developing and executing model transformations.

Rational Soft ware Architect包含支持开发及执行模型转换的转换框架。

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