This paper sets up an unascertained measuring model . Comparing with other models , this model is more rigorous , the conclusion is more reasonable and practicable.

本文给出大气环境质量评价的未确测度模型。与其它评价模型比较，本模型更加严谨，使评价结果合理、实用。

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With the more and more fierce global competitive and the rapid changes of consumers' demands, the traditional management models are facing more and more rigorous challenges.

随着全球性竞争的日益激烈和用户需求的快速变化，传统的管理模式正面临着严峻的挑战。

youdao

With the more and more fierce global competitive and the rapid changes of consumers' demands, the traditional management models are facing more and more rigorous challenges.

随着全球性竞争的日益激烈和用户需求的快速变化，传统的管理模式正面临着严峻的挑战。

youdao