differential rent meaning in English

差额地租
级差地租

They pay differential rents according to their income
他们根据收入多少付级差房租。
By comparing all result of the scheme : determined coefficients , f , t static , we get the best combination , and the function as following : the research affords reasonable land quality indicators system for plain area , on the other hand , affords a simple and convenient method of land differential rent
通过对444组数据各种方案回归分析，得到最优组合的回归方程：还原为c d生产函数形式为： y 48081 ? e ’侧‘ ? f ‘栅’ ? i ’卫刀l ‘川’ q ” ” ’此研究结果得到了一套平原地区农用土地质量指标体系，得到了土地质量对总产出的贡献（ 0刀553 ）。