客观上这种等级指数存在着一定的差异，并且这种功级指数同耕地质量之间的差异有很人的相关性，这是对耕地进行分等定级前提。
The grade index is different objectively, and grade index has great correlation with arable land quality, which is premise of Grade-Determination of arable land.
客观上这种等级指数存在着一定的差异，并且这种功级指数同耕地质量之间的差异有很人的相关性，这是对耕地进行分等定级前提。
The grade index is different objectively, and grade index has great correlation with arable land quality, which is premise of Grade-Determination of arable land.
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