实现没有贫富级差。这是第六条标准。

Achieve no wealth differential. This is 6 standards.

分析了重载交通高速公路的级差效益。

An analysis on the differential benefit of heavy-load traffic expressway was made.

城镇土地定级中初步土地级别的验证按照《城镇土地定级规程》的要求，一般采用级差收益值法。

According to "the Rule of Urban land classification", the graded profit method is generally applied to the preliminary verification of city and town land classification.