A daily input of water, food, and energy of various kinds is matched by an output of sewage, solid waste, air pollutants, energy, and materials that have been transformed in some way.
日常摄入的水、食物和各类能量与输出的污水、固体废物、空气污染物、能源和经过某种转化的物质相匹配。
It tells how to get maximum economy benefit and ecological benefit with minimum input on the basis of energy classifying and benefit analysis of input-output.
并对提高农田生态系统投入产出效益的途经和措施进行了探索。
The emphasis is on discussion of a general structure and theoretical characteristics of the dynamic input-output models and on their uses for energy forecasting.
重点在于讨论动态投入—产出模型的一般结构和理论特征，并放在它们对能源预测的应用上。
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