The basic criterion of measuring the economic effects is the net income per unit area.
衡量农业技术的经济效果的基本指标，应该是单位面积的纯收入。
Objective: To investigate the effects of the phased target teaching in the model unit.
目的：探讨阶段性目标教学在模式病房的应用及效果。
Objective: To investigate the effects of the phased target teaching in the model unit.
目的：探讨阶段性目标教学在模式病房的应用及效果。
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