The possibility of applying grey theories in traffic safety field was discussed in this paper.

对灰色理论在交通安全评价领域应用的可行性进行探讨。

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Some parameters with grey factors in sports system which are not suitable to be evaluated by other theories can be put into this study area and be evaluated here.

它能把体育系统内部的某些具有的灰色因素参数而用其它理论不便于量化评价的研究领域置入它的理论研究范畴内给予量化评价。

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The game psychology and decision-making rule of the players under the condition of grey information were revealed by using the grey system ideas and the systems engineering theories.

运用灰色系统思想和系统工程的理论，揭示了人们在灰信息条件下的博弈心理与博弈决策规则；

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