... marginal propensity to spend out of income 所得边际支出倾向 marginal purchase 边际购买 marginal ray cell [植]边缘射线细胞 ...
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the marginal purchase 边际购买
The lowest marginal cost in electricity purchase of power network is the pursuing target in the power market.
电网购电边际成本最低是电力市场追寻的目标。
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