在传统的牛肉分级中，大理石花纹的等级评定主要依靠分级员的感观评价。
In the traditional way of beef grading, the level of marbling is mainly given according to the grader's feelings.
由于凭借人的感观来评定，农田管理人员的经验和偏好左右着土壤含水量的等级判断，因此判断存在着一定的主观性。
Due to depending on the person's feeling view to assess, the farmland manager's experience and hobby determine the grade judgment of soil water content, so the judgment exist certain subjective.
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