国内外经济发展的历史表明，经济运行具有波动性。经济波动是超越经济体制和经济发展阶段的普遍现象，任何国家的经济运行和企业的生产经营都不可避免地存在波动，这是经济系统的一种自我适应、自我协调、自我更新的过程。但是如果波动超过一定界限，没有预先的监测和预警... The history of the economic development both at home and abroad shows that the economic operation is volatile. Economic fluctuation is a common phenomenon that goes beyond the economic system and the stage of economic development. The economic operation and the production and operation of enterprises inevitably fluctuate in any country. This is a process of self-adaptation, self-coordination and self-renewal of the economic system. However, if the fluctuation exceeds a certain threshold, there is no prior monitoring and warning ...