directive effect

基本解释

Method: Illustrate and expound the directive effect of a system thinking and its optimal principle on clinical rational use of drugs with examples.
方法：举例、介绍、阐述系统思维方法及其整体性、动态性与最优化等原则对临床用药的指导作用。
The study on reliability of fabric topologies of FC has a directive effect on both fault tolerance design and topology selection in the phase of avionics system design.
FC交换式网络可靠性的研究对于航空电子系统设计阶段的容错设计和拓扑选择都将起到指导作用。
No doubt, it has a directive effect on exploratory development of petroleum in China that predicts fracture character and distributive law in low permeability reservoirs.
系统开展低渗储层中裂缝特征和分布规律研究预测，无疑对我国的低渗透储层油气勘探开发具有指导作用。

The Council of Ministers of the European Union approved a draft directive to that effect in June.
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The directive does not take effect until 1999.
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