The feeding-and-management condition is qualitative factor and the index is dynamic.
饲养管理条件是定性因素，指标为动态的。
This method reduces the influence of the subjective factor in the certain degree and causes the qualitative question to the appraisal quantitative.
该方法在一定程度上减小了主观因素对评价的影响并使定性问题定量化。
The qualitative risk factor is quantified by introducing blind data.
利用盲数对定性风险因子进行确定性赋值；
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