... 经济周期波动 business cycle fluctuation 经济周期持续时间 business cycle duration 经济周期的扩展 expansion business-cycle ...
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The continuous character of this model justifies the expressions' cyclical fluctuations' and 'business cycle' although the movements have neither constant duration nor constant length.
该模型的连续性证明的表达式“周期性波动”和“商业周期”，虽然动作既不恒定的持续时间也不恒定的长度。
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