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1·From above we can conclude that the break-even point can be computed mathematical ly but the break-even chart is also widely used.

从上面可以看出，均衡点可以通过数学计算求得，但均衡图仍广泛使用。

2·From above we can conclude that the break-even point can be computed mathematically, but the break-even chart is also widely used.

从上面可以看出，均衡点可以通过数学计算求得，但均衡图仍广泛使用。