在第三章中通过对每一类下划分的具体子类对高学历NEET族成因进行了系统的分析。
Carrying on systematic analysis of the causes of well educated NEET through subdivision divided under every kind of factors in chapter three.
对土石坝原型观测资料的系统误差、粗差的成因进行了分析；
The genetic analysis for system error and lourse error of the prototype observed data of earth-rock dam is carried out.
第三部分探讨了空管灾害成因机理，构建了空管灾害成因分析模型，并阐明了空管灾害预警管理系统的基本原理。
Thirdly, the model of cause of formation of disasters is established, and the basic principles of the early-warning system for disasters of air-traffic management are illustrated.
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