Thus, a credit crunch through the accumulation of financial derivatives has become a chain of unprecedented financial turmoil which caused severe concussion in the real economy by the financial accelerated mechanism. 由此,一次信贷紧缩通过金融衍生链条积聚成了前所未有的金融风暴,又在金融加速机制作用下,引发实体经济的剧烈震荡。