It also does not have to be linearly dependent on your earnings.
不一定要同你的收入挂钩。
The efficacy coefficient method has been propounded on the basis of multiple objectives programming theory, assuming that the value and the index data are linearly dependent.
功效系数法是基于多目标规划原理提出来的，并假定功效分值和各指标数值呈线性关系。
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