产品和技术永远是一对矛盾，因为一个创造需求，一个实施需求。

Product and technology are a pair of contradiction forever, create demand because of, one carries out demand.

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通过研究该区存在的负荷潜力，指出在朝阳区实施需求侧管理的现实可行性。

Then the existing transfer potential of Chaoyang District is analyzed, the result show that the DSM is realistic and doable.

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方法对42例艾滋病患者实施需求性护理，采用SF-36比较护理前后患者的生存质量。

Methods 42 AIDS patients were implemented by demand of nursing care, the life quality was com- pared by SF-36 after nursing.

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