根据巢湖水域渔业生态环境的特点，建立了渔业环境优劣评价体系的递阶层次结构。
This paper sets the hierarchy of assessing fishery eco-environment advantage or disadvantage on the basis of the characteristics of Chaohu Lake fishery waters.
滑坡区建筑适宜性评价的递阶层次结构指标体系。
A construction suitability index system of hierarchy is established based on the stability evaluation of slope.
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