该图即为此农夫的生产能力界限图。
This graph is the farmer's production possibilities frontier.
这种情况下，产能界限图和耗能界限图是同一张。
In this case, the production possibilities frontier is also the consumption possibilities frontier.
图的中间点表示系统超载的界限。
The halfway point of the graphs is the point at which the system becomes overloaded.
图的中间点表示系统超载的界限。
The halfway point of the graphs is the point at which the system becomes overloaded.
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