这使你的控制，在平衡价格和质量，您刚组装PC机。
This gives you the control in balancing the price and the quality of your newly assembled PC.
通过上面的例子可看出，它确实保证了平衡价格的存在。
In terms of the last example this means that it does guarantee that equilibrium prices exist.
这种效率表明：在平衡价格系统下，市场分配机制可实现集中分配机制的最大整体效益。
The efficiency implies that in the equilibrium price system the market mechanism can realize the maximum whole benefit of the centralized mechanism.
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