But if factor supply curves to the industry slope positively, all firms together cannot get an increased quantity of factors of production at an unchanged price.
而如果行业的要素供给曲线是正斜率的话，所有厂商就不可能在价格不变的情况下同时得到更多的生产要素。
The development of permanent magnet electrical machinery with high efficiency and high power factor supply new ways for water pump saving energy.
高效、高功率因数的稀土永磁电机为水泵节能开辟了新途径。
The development of permanent magnet electrical machinery with high efficiency and high power factor supply new ways for water pump saving energy.
高效、高功率因数的稀土永磁电机为水泵节能开辟了新途径。
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